Logo

    The JP AstroCast

    Don’t be surprised if you find yourself signing up for Space Camp after listening to Janet’s Planet's first podcast for kids, The JP AstroCast. Hosted by Janet Ivey, creator of Janet’s Planet, Janet’s Alien SideKick, Eyezak, and a revolving cast of kid interviewers. Prepare to hear out of this world conversations with the most incredible space experts, all upcoming space missions, and the latest space news. Each episode kicks off with a series of questions about space exploration. For example, “How do astronauts go to the bathroom in space? How will we grow food on Mars? How much do I weigh on Jupiter?” Offering a universe of possibilities and galactic inspiration, come and travel at the speed of thought with the JP AstroCast.
    en3 Episodes

    People also ask

    What is the main theme of the podcast?
    Who are some of the popular guests the podcast?
    Were there any controversial topics discussed in the podcast?
    Were any current trending topics addressed in the podcast?
    What popular books were mentioned in the podcast?

    Episodes (3)

    JP AstroCast_Episode 2_Astronaut Don Thomas_How To Become An Astronaut

    JP AstroCast_Episode 2_Astronaut Don Thomas_How To Become An Astronaut

    Full Transcript:

     

    Captain Janet:

    Welcome to The JP AstroCast, where we are traveling at the speed of thought. Today's episode is brought to you by Hunt Brothers Pizza. Eyezak, can you come help me tidy up our hologram stage for our guest today?

    Eyezak:

    Oh, I'm kind of in the middle of something. Can you come here for just a sec?

    Captain Janet:

    Oh, well sure Eyezak, how can I help?

    Eyezak:

    Well, captain Janet, after hearing Dr. John Grunsfeld speak about being an astronaut, going out for spacewalks, and fixing things in space, I decided that I want to be an astronaut. (Singing).

    Captain Janet:

    That's wonderful Eyezak, but as an alien, aren't you already an astronaut?

    Eyezak;

    Not the official NASA kind. I'm just looking for where to start.

    Captain Janet:

    Well, maybe let’s use the search words, 'Apply to be a NASA astronaut.'

    Eyezak:

    Wow, This is the link. I'm going to send my information in. Oh, a master's degree in engineering? I don't have that. Oh, but I am a pretty good pilot. Well, not really, but I am very good on my PlayStation 4. Any special talents? Well, I am an alien that ought to put me way ahead of the pack.

    Captain Janet:

    Well, certainly you have some interesting qualities for sure. I'll tell you what, help me get the hologram stage ready and you can ask our guest astronaut Don Thomas, some questions about how he became an astronaut.

    Eyezak:

    Perfect. And then I'll become an astronaut for sure.

    Captain Janet:

    Well becoming an astronaut can take years of preparation and applying.

    Eyezak:

    Years? Like how many years? I'm not getting any younger in alien years, or human years, or dog years.

    Captain Janet:

    Let's talk about that later. I think I hear the kids coming.

    Kids:

    Eyezak:

    Captain Janet, the crew is here. We can work on my astro thing later.

    Captain Janet:

    Perfect Eyezak! Sounds good. All right my JP space crew, happy to have you gather here at our hologram stage to hear from astronaut Dr. Don Thomas. We have some great snacks for you, so please help yourself, get cosmically comfy and then we'll beam up Astro Don, and talk about his experiences as an astronaut.

    Eyezak:

    Hunt Brothers Pizza is proud to support the JP AstroCast, with over 8,000 locations in convenience stores near you, finding a Hunt Brothers Pizza is easy as pie. Choose between Hunt Brothers Pizza's original crust or thin crust, and top your pizza with any of our 10 toppings at no extra charge. With that many options, there's sure to be a topping combo for everyone to enjoy a Hunt Brothers Pizza.

    Captain Janet:

    All right, everyone allow me to introduce our guest today. What an honor it is to have Dr. Don Thomas beam up today. Astronaut Don Thomas first got interested in becoming an astronaut when he watched the early astronauts like Allen Shepherd, John Glynn, and Neil Armstrong blast off into space and that made him want to follow in their footsteps, and 33 years later, he would do exactly that.

    Captain Janet:

    Don started his professional career as a senior member of the technical staff at the Bell Laboratories Engineering Research Center in Princeton, New Jersey, working on materials issues and semiconductor devices. Ooh, he's super smart. From there, he joined Lockheed's Sciences and Engineering in Houston, Texas as an engineer, working on the space shuttle program. Selected as a mission specialist astronaut in NASA's 13th group of astronauts in 1990, he is a veteran of four space shuttle missions, three aboard Columbia, and one aboard discovery.

    Captain Janet:

    He has spent 44 days in space, completing almost 700 orbits of the earth, and traveling 17.6 million miles in the process. After retiring from NASA in 2007, Don became the director of the Hackerman Academic of mathematics and science at Towson University, working to encourage and inspire young Maryland students about the wonders of STEM. Since 2015, Don has been engaged in public speaking, continuing his efforts to excite and inspire the next generation of scientists, engineers, and astronauts and encouraging all students everywhere to reach for the stars. Most wonderfully astronaut Don Thomas always says yes to speaking to the students of Janet's planet. Welcome Astro Don, thank you for being here today.

    Kids:

    Hello Dr. Don!

    Dr. Don Thomas:

    Oh, that's the way to do it there.

    Captain Janet:

    Eyezak has a question. Eyezak, can you ask about how one becomes, what you want to become?

    Eyezak:

    Yeah. How do you become an astronaut?

    Dr. Don Thomas:

    Yeah, that's a great question, Eyezak. I wanted to do this since I was just six years old, and when I was six years old, back in 1961, that's when we launched the first American into space and I watched the launch at my kindergarten class there. And as soon as our astronaut was in space, I knew I wanted to do that as well. So this was the dream my whole life, and one thing I recognized early on was, it was going to be really difficult to do this. I knew there was a lot of competition, thousands of people apply to be astronauts and then just a small handful gets selected. So I knew the key, had to be working hard and doing my best in school every single day.

    Dr. Don Thomas:

    I never knew if I was good enough, if I could get selected, but I figured I'm going to give it a try, and to do that I got to work as hard as I possibly can and do my absolute best. So that's what I did all through school, and after high school, I went on to college and got my bachelor's degree in physics, one of the sciences. And then I went on to graduate school and got my master's and Ph.D. in engineering, just because I knew that would help me become an astronaut. I also learned to fly. I got my private pilot's license. I learned to skydive, and I taught a university course.

    Dr. Don Thomas:

    These are things that are not requirements to be an astronaut, but I noticed that they seemed to really help. I looked at the people that they were selecting, and most of the people had flying experience, skydiving or maybe had taught a university course. So I watched who NASA was selecting and tried to model my career, a little bit around those requirements and what everybody was doing that was getting selected, and the key also for me becoming an astronaut was persistence.

    Dr. Don Thomas:

    I dreamed of this when I was six, and I started applying to NASA when I was in my late twenties, and I applied four times, and I got turned down the first time, the second time and the third time. And I felt like giving up on it all, but I really wanted to do this. So the key in any dream you have in life is to never give up on it. You want to keep improving yourself, keep making yourself a better candidate. You don't have to be a A++, 100% perfect student, you just have to work hard and do your absolute best, and nobody will ever argue with that ever. And if you don't give up, you work hard, you keep going on your journey, on your dream. I'm convinced that you can become anything you want to in your lifetime.

    Captain Janet:

    One of my favorite stories is how deep they went into looking into Dr. Don's past when he applied to NASA. And wow, can you imagine being investigated by the FBI? Maybe you might think twice before you post something that isn't so nice on social media. Dr. Don, can you tell us more about that?

    Dr. Don Thomas:

    Yeah, that's a great question there Miss Janet. The third time that I applied, NASA invited me down to the Johnson Space Center for a week of medical testing in an interview. And out of the thousands of people that apply NASA selects a hundred individuals. They bring you to Houston and again, you spend a full week, most of it is on a very thorough medical exam, and then there's a one hour interview. The interview is very simple, they just ask me, "Hey, tell me what you did since high school? Why'd you major in physics." They're just asking... They want you to talk about yourself and asking general questions.

    Dr. Don Thomas:

    And I went through all that and it went really well, and then a week later, some of my friends started calling me up from across the country. And they were calling me up and they said, "Hey, Don, the FBI's been calling about you." So usually when the FBI is calling about you, it's either really good or really bad, right? In this case, it was really good. NASA was doing a security background check on me and they looked into my background. They checked the police records in every city, wherever I lived.

    Dr. Don Thomas:

    They met with all my former bosses, every company that I worked for, from high school on. They would talk to my bosses and ask, what kind of worker was I? How did I treat the customers and coworkers? And did I show up to work on time? And then they went up and down the streets in all the neighborhoods, wherever I lived talking to the neighbors, and asking what kind of person was I in the neighborhood? How did I treat people? And had we had social media, we didn't have social media 40 something years ago when I was going through this but had we had social media, can any of you guess what they might have been doing?

    Isaiah:

    Stalking it?

    Dr. Don Thomas:

    They would've been looking at every single post that I had put online there. So you have to be careful today, because you never know, maybe five years, 10 years, 15 years from now, you're applying for some incredible job, maybe to go to Mars or do something else really incredible. And they may do a security background check on you, and just know they're going to be looking at everything they can find, and all your posts are there forever. So you got to be really careful. Be smart about what you post today, because you never know in the future if somebody's going to be looking into that.

    Andrew:

    So I've heard that you've had an engineering career. So my question is, how did your engineering career compare to your astronaut career?

    Dr. Don Thomas:

    Good question, Andrew. I start it off as an engineer, I became an astronaut, and for the last 15 years, I've been working in education. I had a great job in engineering. I really loved the work that I was doing, but almost nothing compares to going in space. I worked as an engineer for six years at a company called Bell Laboratories in Princeton, New Jersey, and then three years I was working at the Johnson Space Center as an engineer before I became an astronaut. And I loved those careers. And I was just so thankful to be working at NASA as an engineer. I really loved it, but I'll tell you nothing can compare to being an astronaut and going in space.

    Dr. Don Thomas:

    And I did that for 17 years, and then I told you I've been in education for 15 years, and this is pretty close. There hasn't been a day since I left NASA that I've been sitting around saying, "Why did I leave? Why oh why did I ever leave?" I found a good career to do after the astronaut job, working with young students like yourself, working with great educators, like Miss Janet here. And it's really rewarding work for me. So, I think my favorite career would be the astronaut, the second favorite on the list would be working in education, and maybe the engineering was a close third there.

    Dharma:

    You mentioned that you got your private pilots license. So what was the best memory you've ever had about learning how to fly? And what's some advice you would give to a student pilot learning to fly like myself. I really look up to in your whole flight career.

    Dr. Don Thomas:

    Wow. That's fantastic. That's great. You're doing that Dharma. I'll tell you my memory of my very first flight. We took off, the instructor gave me the controls, and we started bouncing around. It seemed like a really rough day. And I asked the instructor, I said, "Is that me? Or is this turbulence?" He said, "Let go of the column." So I let go of the stick and the plane smoothed out. And then I took control again and I was bouncing around the sky.

    Dr. Don Thomas:

    So that's one of those funny moments that I remember. I also remember when I soloed the first time, I don't know if I had 20 or 30 hours, I don't know how many hours of flying time I had, but we were practicing touch and goes, coming down, landing, taking off, going around and doing more landings. And after one of those, the instructor just said, "Hey, go over to the control tower, let me out, you're going to go solo." And my jaw dropped, it's like, "Wow." And it was an amazing feeling knowing that, once I took off, there was only one person that could land that plane. That was me. I always had the instructor sitting next to me, and that made it a lot easier, if anything goes wrong, there's an instructor there to take over. But when you solo, you're there on your own. It's a little scary, but in incredibly exciting.

    Captain Janet:

    Dharma, do you have a favorite moment from your flight training so far?

    Dharma:

    I'm often very stressed, but when I get in the plane, just this calmness washes over me. So anytime I get to be in the plane is my favorite moment ever, just that I could be away from everything. So that's my favorite thing ever, I couldn't pick a single memory.

    Isaiah:

    Did you serve in the military, and is it a requirement for the astronauts?

    Dr. Don Thomas:

    Yeah Isaiah, good question. We have two types of astronauts that we select, pilot astronauts and then mission specialists. And almost all the pilot astronauts come out of the military, and even some of the mission specialists do as well, but I never served in the military. I just went the science route. When I was in high school, the United States launched a space station called Skylab, it was our first space station, and they were selecting science astronauts to fly on those missions to do science. And I loved science when I was your age, and I knew that that was my path.

    Dr. Don Thomas:

    Probably about two thirds of the astronauts they select, come out of the military, maybe a third or just strictly civilians. Typically, they select a lot of people out of the military.

    Eyezak:

    What makes a good crew mate?

    Dr. Don Thomas:

    Eyezak, good question. We are in space, like on the space shuttle on my missions, we're in a very small area for two weeks or more in space. So, the number one requirement is to really work as a team, to get along with other people. That's why NASA was carefully looking at, interviewing my neighbors to see how I treated people in the neighborhood and talking to my former bosses to see how did I get along with my coworkers. Because it's so important in space, almost everything we do in space, it's a team effort, and it takes everybody working together, and you have to learn to work with different personalities.

    Dr. Don Thomas:

    So I think that would be the number one thing to be a good crew member. You need to be a really good team player, and work together with the team.

    Isaiah:

    What was your favorite food in space?

    Dr. Don Thomas:

    You are talking with the very first human being to take pizza to space.

    Captain Janet:

    Famous even, right? You're famous for this, right?

    Dr. Don Thomas:

    I'm, famous for that. Yeah. I'm not famous for much else, but I'm famous for flying the first pizza in space. And I'll just tell you the story quickly, we're allowed to carry a sandwich with us out to the launchpad, on launch morning, because we may be laying on our backs out there for a few hours if there's weather to even longer than that. So they would let us take a sandwich, and most of the time you may take a Turkey sandwich or something like that. But on my third mission I asked instead of a Turkey sandwich, could I get a slice of pizza? Because I love pizza. And they said, "Yeah, we can do that." So they made me a little personal pizza. It was pepperoni, and we flew that in space. I did that both on my third and fourth missions.

    Dr. Don Thomas:

    So, we don't normally fly pizza, most of our food, as you probably know is freeze-dried food or military rations, MREs Meals Ready to Eat, that come out of the military. And most of that food is okay. When I get asked the question, what's my favorite space food? I say none of them. Because it isn't that good, and I would never go to a restaurant that was serving space food. I wouldn't do that. But it's okay, it's a lot like camping food.

    Dr. Don Thomas:

    My favorite overall of the food that I had in space, they had beef and barbecue sauce. That was one of the MREs, the military rations that were pretty good. And we had sweet and sour chicken, which was good up there too. I did make, before I flew the pizza in space, we made what we call space pizza and that would be taking a tortilla, and then I would spread some spaghetti and meat sauce on top of that, and then roll it up. And that was as close as I could get to a pizza.

    Andrew:

    What was the funniest thing you saw in space?

    Dr. Don Thomas:

    We don't do a lot of practical jokes. People always ask that, so tell me about the practical jokes you do in space. And it's like, "Boy, I don't have any stories like that." Because you don't want to go up to somebody and try to scare them going, "Boo." And have them jump and maybe hurt themselves. So, we don't do a lot of practical jokes up there, but one of the funnier things that I saw in space, is sometimes when the astronauts have free time, we goof around. I don't know if any of you guys goof around all, but sometimes the astronauts goof around and what we like to do, we play catch, up in space. And when you play catch here on earth, you're probably using a football or a baseball. In space we don't have anything like that, so what we'll do, we have one of the astronauts, we'll tuck themselves into a little ball and then two of us can play catch with that individual. And it's really funny to watch two people playing catch, with a third person going back and forth, just tucked into a little ball like that.

    Dharma:

    Was there any feeling that compared to looking back on earth while in space?

    Dr. Don Thomas:

    There is nothing like that. Before I first flew in space on my first mission, I trained to be an astronaut for four years for that flight, and in that four-year period, I probably had 40 or 50 hours of training on earth observation training. So, specialists would come in, show us pictures of the earth taken from space and tell us what we're looking at. So once we got to space, we would be very familiar with what we're looking at back on planet earth. So I thought, okay, I've seen it, I know exactly what it's going to look like when I get to space, but that wasn't the case. Once I got to space and I looked out the window the first time I just gasped, I went, "Oh wow." It's just so incredible when you see it with your own eyes.

    Dr. Don Thomas:

    The pictures that we take, the IMAX movies that you'll see of the earth, they don't do it justice. You see much more detail and subtle color variations with your eyes, than any of the pictures can take. So, it just doesn't do it justice, and every astronaut, the very first time they look out the window with their own eyes, you'll hear that gasp. And I'm gasping at how thin the atmosphere is from space. Our atmosphere is just a paper-thin layer around the earth and it's glowing blue, like a blue fluorescent light glowing. And then I'm all also gasping at the black sky. The sky in space is a darker black color than I've ever seen anywhere else. I've been caving, where we all turned off our lights, it's pitch black, but I think the sky in space is even darker, darker than that.

    Isaiah:

    How old were you when you went to space?

    Dr. Don Thomas:

    Okay. When I got selected to be an astronaut Isaiah, I was 35 years old and the first time I made it to space, I was 39 years old. And 39 years old, that's pretty much an old man, right Isaiah? You could be honest. That's okay. Is that an old man or not?

    Isaiah:

    Kind of.

    Dr. Don Thomas:

    Kind of. Yeah. And my point is, some of the careers you're going to pick, it's going to take time to get there. If you want to be a teacher, doctor, lawyer, scientist, professional athlete, it takes a lot of time after high school to get there. So don't be turned off by that, just keep working hard, keep following your dream, follow your path. You can accomplish anything you want to, don't worry about how much time it takes.

    Captain Janet:

    JP Space Crew I really want you to hear this. I think sometimes we think that things are going to happen instantly, the moment that we apply, and if we just put our best out there, there's going to be an instant yes. But as we listen to Dr. Don's story, he applied, and applied, and then applied for a third time and got another no. And Don, I just have to say, please tell them more about this experience of getting that third no, going to bed that night and then waking up the next with what decision.

    Dr. Don Thomas:

    I thought I got to do something else. NASA doesn't want me, and I thought I'll go to bed, get a good night's sleep and then in the morning when I wake up, I would put together a new plan for my career that did not involve being an astronaut. Because I had worked hard, I did my best, and just three times in a row NASA said no to me. I went to bed that night, the next morning when I woke up, the very first thought that popped into my head was, I still want to be an astronaut. And that dream never died as I slept that night.

    Dr. Don Thomas:

    So I just kind of dusted myself off and said, "Okay, what else can I do? I've learned to fly. I've learned to skydive. I've taught a university course." And just looking at who NASA was selecting and who they weren't selecting, it was pretty clear that I could increase my chances quite a bit by working down at the Johnson Space Center. So I moved, I quit my job. I moved down to Houston, got a job there with NASA, as an engineer and did that for three years and then became an astronaut.

    Dharma:

    What is your life advice for students?

    Dr. Don Thomas:

    My life advice for students, whatever your dream is in life, you don't have to be dreaming of being an astronaut, whatever your dream is, if you want to be a teacher, a doctor, a lawyer, a scientist, whatever, just work hard and always do your best. You want to do your best every single day, in all your subjects, because you never know when something you're learning today is going to help you out in the future. And the other thing is to never give up on that dream, keep working hard towards that goal. You'll get discouraged. You'll fail along the way, I failed three times, but you just got to pick yourself up and try to figure out, okay, what am I missing here? How can I make myself a better candidate?

    Dr. Don Thomas:

    But the key is to never give up. It takes hard work. It takes time, and never give up on your dream and you can accomplish anything you want to in your lifetime. Because I was just an average student in school, but I had a big, big dream and I was going to go for it and nothing was going to hold me back.

    Captain Janet:

    We are so glad that you stuck with it, that you didn't give up and that you persevered, otherwise we wouldn't be having this incredible conversation with you. To learn more about astronaut Don Thomas, you can visit his website, Ohioastronaut.com. And if you're really wanting to know more, read his book Orbit of Discovery available on Amazon.

    Dr. Don Thomas:

    Thanks. It's been great being with you, Isaiah, Andrew and Dharma, thanks for the great questions and Eyezak always great getting your questions as well. Thank you so much.

    Captain Janet:

    Bye

    Kids:

    Bye.

    Eyezak:

    Wow. Astronauts are the best!

    Captain Janet:

    Indeed they are, and just like astronaut, Don said, NASA is looking for all kinds of people to be astronauts and especially those who are kind and know how to get along well with others. And Isaac, you definitely are one of the best crew members I've ever had.

    Eyezak:

    Wow, thanks Captain Janet. Hey, would you be willing to write me a recommendation letter?

    Captain Janet:

    You bet I would. Thanks everyone for listening to the JP AstroCast. Let your mind revolve around this thought, the universe is always expanding, let your dreams do the saying. And that's the view from the JP AstroCast. (Singing).

    The JP AstroCast
    enMarch 21, 2022

    JP AstroCast_Episode 1_Dr. Grunsfeld_New Beginnings_

    JP AstroCast_Episode 1_Dr. Grunsfeld_New Beginnings_

    Transcript:

    Captain Janet:

    Welcome to the JP AstroCast, where we are traveling at the speed of thought. Today's episode is brought to you by Hunt Brothers Pizza. Ah, Eyezak, what are you doing?

    Eyezak:

    Hey, Captain Janet. I'm just hanging up some pictures on these walls. New crew, new beginnings, new surroundings.

    Captain Janet:

    But Eyezak, you're using nails?

    Isaac:

    How else would I hang a picture?

    Captain Janet:

    Well, I don't know, but you don't put nails in a spaceship. That might puncture our hull, and then we would lose oxygen, and we need that to breathe.

    Eyezak:

    Oh, didn't think of that. Hmm.

    Captain Janet:

    Did you just hang that picture up with your chewing gum?

    Isaac:

    Yep. Problem fixed. Right.

    Captain Janet:

    You know, this post-it was supposed to be something entirely different, so okay.

    Eyezak:

    That ought to do it. Do you think our new crew will like my decorations?

    Captain Janet:

    I'm sure they'll love it, Eyezak.

    Eyezak

    Okay. Do you think they'll like me?

    Captain Janet:

    Of course, they will. Everybody loves you.

    Eyezak:

    Usually, but these kids are super genius smart. They read lots of books and do experiments and want to do awesome things in space. What if they don't think I'm smart enough to hang out with them?

    Captain Janet:

    Eyezak,I am sure they will love you. And here they come now.

    Kid 1:

    Hello.

    Kid 2:

    Hey everybody.

    Captain Jane:

    Glad you guys are here.

    Captain Janet:

    All right, crew. Welcome to Janet's planet and happy to have you aboard. First, unpack your gear in your cabins and then meet Eyezak and me in the galley for some lunch. And then we'll beam up Dr. John Grunsfeld to speak about his work on the Hubble telescope and the newest thing in space, the James Webb Space Telescope.

    Maggie:

    That's amazing.

    Captain Janet:

    See Eyezak, was that so bad? They're really cool and super accepting kids. I know new beginnings are tough, but you're going to be just fine. And one of the esteemed JP space crew.

    Isaac:

    Oh, I sure hope so. I hope I don't ask Dr. Grunsfeld any not-smart questions.

    Captain Janet:

    Oh, Isaac. Here's the thing. There are never any not-smart questions. Now let's just go get ready for lunch. Remember it's Hunt Brothers Pizza today.

    Isaac:

    Oh, my favorite! Hunt Brothers Pizza is proud to support the JP AstroCast with over 8,000 locations in convenience stores near you, finding a Hunt Brothers Pizza is easy as pie. Choose between Hunt Brothers Pizza's original crust or thin crust. And top your pizza with any of our 10 toppings at no extra charge. With that many options, there's sure to be a topping combo for everyone to enjoy a Hunt Brothers Pizza.

    Captain Janet:

    All right, everyone. Quiet, please. I would like to introduce our guest today. He is fittingly an astronaut and astronomer. Dr. John Grunsfeld hails from Highland Park, Illinois, received a Bachelor of Science Degree in physics from MIT, a Master of Science Degree, and a Doctor of Philosophy Degree in physics from the University of Chicago. Dr. Grunsfeld has four NASA space flight medals, three NASA exceptional service medals, a NASA distinguished service medal, and many other special honors.

    Captain Janet:

    Dr. Grunsfeld was selected by NASA in March 1992 and reported to the Johnson Space Center in August 1992. A veteran of four space flights, Dr. Grunsfeld has logged over 45 days in space, including five spacewalks, totaling 37 hours and 32 minutes. During STS 1 0 3, Dr. Grunsfeld and his crew installed new gyroscopes and scientific instruments and upgraded systems on the Hubble space telescope, which required three spacewalks. STS 1 0 9 successfully upgraded the Hubble space telescope, installing a new digital camera, a cooling system for the infrared camera, new solar arrays, and a new power system.

    Captain Janet:

    Those upgrades required a total of five spacewalks in five consecutive days. He's watched Hubble drift against the background of earth and stars. And he's guided new parts and instruments into the telescope and left it whole and healthy. He has helped the science missions of Hubble and envisioned science goals for the James Webb space telescope. And is now an Emeritus scientist at Godard Space Flight Center, working on Hubble observations of Jupiter's moon, Europa, and collaborating on the design of the next generation of space. serviceable telescopes. Dr. John Grunsfeld, what an honor to have you beam up today?

    Dr. John Grunsfeld:

    Well, it's absolutely a pleasure to be on. I'm excited because we are on the cusp of an astronomical revolution. And for me, my telescope is the Hubble space telescope. And what's interesting is about a third to a half of everybody who lives on planet earth has always lived in a world with the Hubble space telescope. And that's because it's been in orbit for 31 years coming up on 32. Your telescope though will be the James Webb space telescope. And you'll be learning about the new universe that the James Webb Space Telescope sees over the coming years. So thanks for having me on board.

    Evy:

    How or when did you know you wanted to be an astronomer and an astronaut?

    Dr. John Grunsfeld:

    When I was born, 1958, I know that's a long time ago, but there were no astronauts. In fact, the very world's first satellite had just been launched a year before, but as I was going to elementary school, we started sending astronauts off into space. First, there was the Mercury program where one astronaut would go into space at a time in a Mercury capsule. Then Gemini. And that's what I remember are the Gemini missions where two people at a time would go and then the Apollo missions to the moon. And I thought that was all exciting.

    Dr. John Grunsfeld:

    So about age six or seven, I was already a young scientist. I was interested in fossils and dinosaurs and insects. But once we moved out of the city lights, I started seeing the night sky and that's when I decided I wanted to be an astronomer. And my grandmother at that time gave me a small telescope. And I started looking at the planets and the stars. That's when I decided I wanted to be an astronomer. And it came from looking up at the stars and wondering if there were other planets out there that had people. Well, whatever people would be, aliens.

    Eyezak:

    Aliens! Well, I would think that my presence would more than confirm that question.

    Captain Janet:

    Yes. Maggie?

    Maggie:

    I just wanted to say what I thought was kind of interesting is my grandma gave me a telescope too, a few years ago for Christmas. So, that was cool.

    Captain Janet:

    Really? How old were you?

    Maggie:

    I think over three years ago.

    Captain Janet:

    That is pretty cool.

    Lucas:

    What is it like working on Hubble?

    Dr. John Grunsfeld:

    Oh, I love working on the Hubble space telescope. As you know, the Hubble space telescope was designed to be serviced. And that means to be fixed by people in space suits with the big gloves. First of all, doing a spacewalk is just the coolest thing anyway. You get to put on a spacesuit, you get to go outside of the space shuttle or space station and float around in your own spaceship, the suit that wraps around you. You get to see the earth just through your thin visor. So, that's really fun. Plus I'm an astronomer. And so we love telescopes. So I got to be the one to fix the Hubble space telescope. And some of the things we did were really hard. And so we had to figure out new tools and new ways of fixing things in orbit.

    Dr. John Grunsfeld:

    Here on planet Earth, I get to use the Hubble space telescope to observe, and that's not as much fun as working on the Hubble up in space because you put in a proposal and NASA approves it, and then you get your observations. It's basically downloading the data from a server. So you don't really get to play with the Hubble at all, but then you get the cool science and you get to see pictures of your Europa. And Jupiter. And that's pretty cool.

    Eyezak:

    Look, look, do you have a favorite image from Hubble?

    Dr. John Grunsfeld:

    I have a bunch of favorite images from Hubble because I went up three times to fix the Hubble space telescope. And my favorite image each time is the first image that Hubble takes. In the case of my first mission in 1999, it was the Eskimo Nebula. In 2002, it was an image called the Tadpole.

    Dr. John Grunsfeld:

    The Eskimo Nebula is a star that's dying. And as it dies, it kind of has these temper tantrums and flows off its outer envelope. And then that glows. And so this particular image looks kind of like an Eskimo in his big parka. The Tadpole is a picture of two galaxies that have collided and they're circling around each other and have thrown out a long tail of material. And in that long tail of gas and dust, new stars are for me.

    Dr. John Grunsfeld:

    And on this most recent mission, it was a picture taken a little later, but my favorite image is an image that widefield camera three, the new super-duper digital camera on Hubble, took of the Orion Nebula, the great Nebula, and Orion. And the reason I like these images so much is that it proves that we fixed the telescope and didn't break it. If we got home and they turned the telescope on and it couldn't take images anymore, I'd feel terrible.

    Kevin:

    I heard if the James Webb telescope doesn't deploy everything as it should. There's something you can make it do. I think it was called the shimmy?

    Dr. John Grunsfeld:

    The James Webb space telescope isn't really assembled completely when we launch it. And that's because it has to be folded up so that it fits in the rocket faring inside the rocket. And once the rocket's launched, it's like a transformer or undoing an origami or both, that it has to slowly unfold and pieces have to come out before it can be a real telescope. There are I think, 40 different mechanisms and 600 pulleys and 150 motors, and 178 individual actuators.

    Maggie:

    That's amazing.

    Dr. John Grunsfeld:

    And it's incredibly complex for all these things to work. And so if something like the secondary mirror, there's the big mirror, and then there's a little mirror above it. If that doesn't unfold all the way, they can't send me out to give it a shake or to pull it. Astronauts can't go near the telescope. We don't have the capability, but also it's too delicate.

    Dr. John Grunsfeld:

    And so what you can do is kind of drive the motors or use the spacecraft to shake it while you're trying to drive the motor and see if you can redeploy it. And so, we'll try everything and anything to make sure everything deploys.

    Evy:

    How long will take to unfold?

    Dr. John Grunsfeld:

    It's going to unfold in pieces. The very first thing that will unfold, which is actually just a few hours after launch are the solar panels. So you can see on Hubble, there are those big solar panels. Well, we actually put those on ourselves and then unfolded them. So just after launch a few hours after it separates from the launch vehicle, the solar panels will unfold. That'll give it the power it needs to drive all those other motors. Then a few days later, they'll start to unfold the sunshade, and this will be about the size of a tennis court. And so over the course of about two weeks, most of the deployments will be done, but it'll take about a full month before everything is fully deployed because they want to go slow and carefully.

    Captain Janet:

    How soon will we be able to get an image from the J W S T?

    Dr. John Grunsfeld:

    I don't know exactly what it is, but it's going to be a few months. And that's because not only does James Webb have to deploy, but it has 18 mirrors and those mirrors are aligned to make one big mirror. So they have to go through individually and adjust each mirror so that it works as one mirror and not 18 individual mirrors. And so it's going to take a few days for each mirror while they turn it, adjust it and maybe bend it until the whole telescope works as one.

    Dr. John Grunsfeld:

    So probably there'll be some really bad images that'll come out in about three months. I'm not even sure if NASA will show those, but probably they will. And over the next couple of months, those images will sharpen up until they're as good as Hubble. And, and that'll be at about six months. So commissioning of the telescope, which means making sure everything works takes about six months.

    Eyezak:

    How does the sun shield work?

    Dr. John Grunsfeld:

    The sun shield works like an umbrella. If it's a really bright sunny day and you forgot a hat, because you thought it was going to rain, you can always open your umbrella and use it as a sun shield. And so it works just like that. The problem is with a spacecraft is, there is some space junk out there. And if the space junk goes through your umbrella, there'd be a hole in it. And the sun would go through that hole. So in order to prevent that the James Webb space telescope actually has five layers in its umbrella in its sun shield so that if one layer gets punctured, it won't let the light through all the way to the telescope. The other effect of having those five layers is for thermal reasons, not just blocking the sunlight, but on the sunny side of the James Webb Space Telescope, it's about 200 degrees, really hot.

    Dr. John Grunsfeld:

    And with each subsequent layer, it acts like a Thermos bottle. So that on the cold side, the part that faces where the James Webb space telescope will be looking, the temperature will be about minus 400 degrees Fahrenheit, just 40 degrees above absolute zero. And so the sun shield does two things. One, it just blocks the light. You can't see the stars in the daytime and that's because the earth is so bright, the Hubble is so bright, that the camera had to be set to an exposure. And the same is true of our eyeballs that you can't see stars. You need to be at night to see stars so that you can have that sensitivity. The same is true for James Webb. So it has to block the sunlight. That's the main purpose. And the secondary purpose is to allow the telescope to get super cold so that it can see the very faint light from the early universe.

    Dr. John Grunsfeld:

    The James Webb space telescope will do so much more than looking back at the very early universe. It will also study the formation of stars, the formation of galaxies, and the time history of galaxies all the way up to the present. It'll look at planets in our own solar system. I'm really excited because one of its first targets will be Europa, around Jupiter, to look to see if it can see those plumes. And then the other big thing that James Webb is going to do is just going to look at the atmospheres of planets around nearby stars so that we can see if there's another planet out there that kind of looks like Earth. So I'm pretty excited about that too.

    Eyezak:

    I'm a little embarrassed to ask, but why is it called the James Webb Space Telescope?

    Captain Janet:

    Oh, you don't have to be embarrassed. Eyezak. Dr. Grunsfeld, could you please tell our young crew a bit more about James Webb?

    Dr. Grunsfeld:

    James Webb was the first, well, one of the first directors, we call them administrators, of NASA. And so he was in charge of trying to get people to the moon and back. But another thing that he did that people don't know a lot about is that he made sure that science was part of NASA and that it was a big part of NASA. And that astronauts would go to the moon and do science. And so in recognition of his contributions to scientific investigations of space, the NASA administrator in 2004, named the telescope after James Webb. So that's why it's called the James Webb space telescope.

    Captain Janet:

    I am excited about this new beginning. In reality, when you look through a telescope as an astronomer, a telescope is almost like a cosmic time machine. It's allowing you to see the past in part because of the way that light travels. Can you speak to how, whenever you look up at the stars on a starlet night that we're seeing into the past?

    Dr. John Grunsfeld:

    So how many of you have seen a bolt of lightning? And then five seconds later, you hear the thunder, right? Pretty much all of us, right? Why does the thunder take so long to get to us when we see the light almost right away?

    Ander:

    It's because light goes faster than sound.

    Dr. John Grunsfeld:

    Right. The speed of sound through the air is really pretty slow. It travels about a thousand feet every second. Whereas the speed of light goes 186,000 miles per second. And so the light comes to us really quick, whereas the sound takes longer, but light still has a speed. And that means when we look at the sun, for instance, or you don't look at the sun. When sunlight reaches us, it took about eight minutes to travel from the sun to the earth because it's 93 million miles away. Well, the sun is really close compared to the nearest star. It takes four years for the light to get to us from the nearest star, off of Centauri.

    Dr. John Grunsfeld:

    It takes millions of years for light to get from a galaxy to us. And the light that James Webb is going to look at will have taken at the very most distant, will have taken about 13 and a half billion years to get to us. And so when we look at some fuzzy galaxy, that was one of the first galaxies that ever assembled in the universe, the light that left that galaxy will have traveled for 13 and a half billion years to get to us. And that means when we see that light, we're looking at that galaxy as it was when it was just a baby galaxy. And so that allows us to look back in time, really because we have no other choice, it just took that long for the light to get to us.

    Evy:

    How long will the James Web telescope work?

    Dr. John Grunsfeld:

    Good question. It was designed to last at least five years. And we think if we operate it really carefully, it will last for about 10 or 11 years. And that's just because that's how much fuel it has onboard.

    Captain Janet:

    I will point out that NASA is notorious for underestimating the longevity of its hardware, like spirit or opportunity, both outlasted, original projections by a long shot.

    Speaker 8:

    You said that, in five to 10 years that the James Webb telescope will run out of fuel. Is there any chance that NASA will send any refueling missions to keep the satellite operating for longer?

    Dr. John Grunsfeld:

    It's possible. Right now, there are no plans, but when was in charge of the James Webb space telescope project, I insisted that they put some little details on the telescope. There are like targets so that a robot spacecraft would know where to grab if we did send a refueling spacecraft out there, but right now there are no plans to do that. I hope in the next five years or so, that refueling technology and capability and space will advance to the point where that seems like a very reasonable thing to do.

    Maggie:

    Do you think it'll answer the cosmic question of, "Are we alone?"

    Eyezak:

    Huh? Yeah. I'm getting really tired of people thinking I live on some made-up street in New York City. No one believes I'm a real alien.

    Dr. John Grunsfeld:

    Okay. We're here on earth and we are building these telescopes and we now know that virtually every star you look at in the night sky has planets around it. When I was growing up, we didn't know that I suspected there might be, but we didn't have any scientific proof. Now we have proof that other solar systems are out there. It just seems so likely that if there's life on earth, life should have started somewhere else. If life is a one in a million chance on a planet, there are 200 billion stars in our own galaxy, which means there are at least that many planets. Then there should be lots and lots of life. But if life is a one in a trillion chance, we might be the only life in the whole galaxy. And we just don't know. So that's one of the things that the James Webb space telescope is going to try to look at planets around nearby stars to see if we see atmospheres that could be habitable.

    Dr. John Grunsfeld:

    So if there's another planet, even if it's close and they put as much pollution in their atmospheres as we put in ours, there's a tiny chance we might detect that, but probably not. That's going to take a telescope that's a little bit bigger than the James Webb. I think that that question will be answered when we send a probe to Europa or Enceladus, or maybe on Mars, you'll find a microbial fossil, or maybe even a live Martian microbe when you're on Mars. Or with a next-generation telescope beyond James Webb, something that instead of being 20 feet across is 30 or 35 feet across, a 16-meter telescope might be able to answer that question.

    Captain Janet:

    Wow. Thank you so much, Dr. Grunsfeld, for beaming up to the JP spaceship to speak with our crew.

    Speaker 3:

    Thank you.

    Speaker 4:

    Thank you, Mr. Grunsfeld.

    Eyezak:

    Thank you.

    Dr. John Grunsfeld:

    My pleasure.

    Captain Janet:

    We had a great time speaking with you. Would you consider coming back again?

    Dr. John Grunsfeld:

    Sure. My pleasure.

    Eyezak:

    Wow! Smart and brave and nice?

    Captain Janet:

    He truly is a gem. And speaking of gems, let's talk about the newest gem that NASA has launched, the James Webb telescope. December 25th, 2021 may become known as the day. The universe changed from a tropical rainforest to the edge of time itself. Congratulations to the many amazing humans at NASA, the European space agency, the Canadian space agency, and Arian space. Listen to the launch countdown from Kuru, Guyana, and an excited Dr. Thomas Zurbuchen, the associate administrator for NASA science mission directorate, talk about the joy of watching 20 plus years of work finally take flight.

    ESA Mission Control Manager:

    [foreign language 00:23:53].

    NASA:

    We have lift off.

    Dr. Thomas Zurbuchen:

    Whenever we look at launches, they're both an ending in the beginning. They're an ending of an engineering project on the ground and with many amazing hours and challenges that are there. But they're a beginning. JWST is the beginning of one of the most amazing missions that humanity has conceived. And I'm so excited to look forward to the next setup of this telescope and all the signs to come. Thanks to everybody. This is what we can do when we come together as one, humans. It's just absolutely incredible.

    Captain Janet:

    I love Dr. Zurbuchen's sentiment, that the engineering marble that is the James Webb telescope, is what can happen when we all come together for space exploration. 100 times more powerful than the 31-year-old Hubble telescope, Webb can see back in time, all the way to the let there be light moment. That instant when a cold dark universe ignited into stars and Webb, made perchance, put an end to some of our biggest cosmic questions. We just can't wait to see the James Webb space telescope unfold the universe for all of us.

    Captain Janet:

    So you see Eyezak, just like with the JWST, new beginnings can be scary, but they are also exciting.

    Eyezak:

    You're right. I'm excited to explore the universe with this awesome new crew.

    Captain Janet:

    Thank you, everyone. For listening to the JP AstroCast, let your mind revolve around this thought.

    Eyezak:

    The universe is always expanding.

    Captain Janet:

    Let your mind do the same.

    Captain Janet and EyezaK:

    And that's the view from the JP AstroCast.

    The JP ASTROCAST, a galaxy of fun.

    JP AstroCast Welcome Episode

    JP AstroCast Welcome Episode

    The JP AstroCast is hosted by Janet Ivey, creator of Janet’s Planet,

    Janet: Hi everybody!

    Janet’s Alien SideKick, Eyezak,

    Eyezak: Greetings Earthlings!

    and a revolving cast of future space explorers!

    All Kids: HI! Space is Cool, Come join us!

    Prepare to hear out of this world conversations with the most incredible space experts, all about upcoming space missions and the latest space news.

    Each episode kicks off with a series of questions about space exploration. For example,

    “How do astronauts go to the bathroom in space?

    How will we grow food on Mars?

    How much do I weigh on Jupiter?”

    Logo

    © 2024 Podcastworld. All rights reserved

    Stay up to date

    For any inquiries, please email us at hello@podcastworld.io