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Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (Planetary Science Institute), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us. Astronomy Cast is supported thru patreon.com/AstronomyCast.
 
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In the season finale of my questions show, I talk about high-altitude bacteria, traveling into the future, does it make sense to go back to University, and more. See you all in September! 00:00 Start 01:10 How high an altitude can bacteria survive? 04:02 Should I go back to university? 06:29 Could we terraform Venus with comets? 08:49 Could we dete…
 
Astronomy Cast Ep. 612: The SETI Renaissance by Fraser Cain & Dr. Pamela Gay Last week we talked about the various ways that astronomers could detect the presence of intelligent civilizations by observing technosignatures. This week we'll give you an update on the state of the search for extraterrestrials. This field has gone from a collection of p…
 
In this week's questions show, I explain why Dyson Spheres (and Swarms) should actually be pretty easy to detect across the Universe. If it's possible to service the Hubble Space Telescope with a Falcon 9, and will computers take jobs away from astronomers. 00:00 Start 01:04 How could we detect Dyson Swarms? 07:24 How could we hide a Dyson Swarm? 1…
 
Astronomy Cast Ep. 611: What is Required to Confirm Alien Life: Intelligence Edition by Fraser Cain & Dr. Pamela Gay Last week we talked about what it's going to take to confirm basic biological life across the Solar System and the Milky Way. This week, we'll discuss what it's going to take to detect intelligent life out there in space.…
 
My guest today is Professor Lee Cronin from the University of Glasgow. Dr. Cronin investigates the chemistry of life and has developed methods that could help us detect it on other worlds - even life as we don't know it. http://www.chem.gla.ac.uk/cronin/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LI…
 
In this week's questions show, I explain what would happen if scientists discovered an existential threat to humanity. Would they let us know, or keep it secret to avoid a panic? Could we detect a Breakthrough Starshot fleet coming our way? And how well does China communicate its space exploration to the public? 00:00 Start 00:37 Would they tell us…
 
Astronomy Cast Ep. 610: What is Required to Confirm Alien Life: Non-Sentient Edition by Fraser Cain & Dr. Pamela Gay Are we alone in the Universe? It's one of the biggest scientific questions we can possibly ask. And yet, with rovers on Mars, missions planned to visit Europa and Ganymede. Powerful telescopes able to detect the atmospheres of exopla…
 
In this week's questions and answer show, I explain how all the dust in space forms, could life be Von Neumann probes, why do people think black holes lead to another universe, and more... 00:00 Start 00:57 What is space dust? 05:14 Does the Kardashev scale make sense? 08:43 Could life on Earth be Von Neumann probes? 11:31 What should I point my te…
 
In this week's Q&A, I try to imagine what might happen if a microscopic black hole passed through the Earth. How long will James Webb take to become operational, and what will be the Plan B for James Webb if it fails? 00:00 Start 00:46 What if a microscopic black hole passed through the Earth? 05:25 When will James Webb come online? 06:38 What's pl…
 
Astronomy Cast Ep. 608: NASA Perseverance, The First 100 Days by Fraser Cain & Dr. Pamela Gay As you all know, Pamela refuses to talk about any missions which aren't actually doing science. Well, Perseverance has crossed the line, from fantasy to an actual working rover, scooping regolith and yeeting helicopters. What has the rover accomplished in …
 
In this week's episode, I talk about the various ways we measure the age of the Universe. What's next for OSIRIS-REx? And what are the next frontiers for gravitational wave astronomy? 00:00 Start 00:41 How do we calculate the age of the Universe? 04:32 Will the planets migrate again? 06:36 What's next for OSIRIX-REx? 07:47 What's next for gravitati…
 
I'm pleased to welcome back Dr. Casey Handmer, a software systems architect at NASA's Jet Propulsion Laboratory. In addition to his work at NASA, Casey has a fascinating blog where he considers the future of human and robotic space exploration: https://caseyhandmer.wordpress.com/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.unive…
 
Astronomy Cast Ep. 606 - Time Dilation: Skipping Thru Time by Fraser Cain & Dr. Pamela Gay Have you ever wanted to be a time traveler? Well, good news! You're time traveling right now. Into the future at one second per second. Taking too long? Don't want to wait? Good news, Einstein's got you covered. Today, let's talk about the weird world of time…
 
My guest is Dr. Michael H. Hecht, a research scientist and associate director at MIT's Haystack Observatory. Hecht is also the principal investigator for the Mars Oxygen ISRU Experiment onboard Perseverance: https://www.haystack.mit.edu/researcher/mike-hecht/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCA…
 
In this week's questions show, I consider what the night sky might look like if you could stand at the center of the Milky Way where the stars are denser. Do all stars have Oort clouds? And could Starship really send humans to Mars for the price of a house? 00:00 Start 00:50 What would the sky look like at the center of the Milky Way? 04:05 Will th…
 
My guest is Dr. Ken Olum, a research professor at Tufts University. His primary research is into cosmic strings, and how they could be detectable through techniques like gravitational waves. 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS: ════════════════════════════════════ RSS: https://universet…
 
Astronomy Cast Ep. 604: Balloon Astronomy by Fraser Cain & Dr. Pamela Gay So when you think about the world's observatories, I'm sure you're imagining huge telescopes perched atop mountain peaks or space telescopes like Hubble. But you might be surprised to learn that some telescopes are carried high into the atmosphere on board balloons. What can …
 
In this special interview, I was fortunate to speak with Dr. Ronald Mallet, an emeritus professor at UConn. In addition to a lifetime's work in cosmology and astrophysics, Mallet has been trying to work out how our understanding of Einstein's theories of General Relativity might lead to a practical form of time travel. https://physics.uconn.edu/per…
 
In this week's questions show, I explain why we'd be able to recognize aliens, even if they were vastly more technologically advanced than us. Why I don't do any promotional ads on my videos, and if we have any examples of energy turning into matter. 00:00 Start 01:09 Can we actually recognize aliens? 04:18 Why don't I have sponsors? 06:33 Could we…
 
In this week's questions show, I explain whether or not gravity is infinite, will we need to cure cancer to go to space? Will SpaceX help Artemis' chances for landing humans on Mars in 2024, and more... 00:00 Start 00:54 Is gravity infinite? 02:33 How deep does lunar regolith go? 04:09 Could nearby star systems contain planets that we don't know ab…
 
My guest is Dr. Jessie Christiansen, an astrophysicist with NASA's Exoplanet Science Institute. Jessie will give us an update on TESS and the 2,200 planets it's discovered so far. http://web.ipac.caltech.edu/staff/christia/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS: ══════════════════════════…
 
My guest is Dr. Rebecca K. Leane, an astroparticle physicist with the SLAC National Accelerator Laboratory. The work involves innovative ways to detect dark matter. http://rebeccaleane.com/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS: ════════════════════════════════════ RSS: https://universeto…
 
Astronomy Cast Ep. 603: New Colors of the Radio Spectrum by Fraser Cain & Dr. Pamela Gay Last week we talked about how new telescopes and techniques are allowing astronomers to explore the shortest wavelengths of light. This week we go to the other end of the electromagnetic spectrum and explore the longer radio waves which are now accessible to as…
 
In this week's questions show I explain why we could be first in the Universe, do galaxies flip or spin, did I pick a good career? And more. 00:00 Start 00:47 Are we first in the Universe? 03:01 Do galaxies flip end over end? 04:28 Bro, get a better career 06:46 How much longer can SLS going? 10:33 Did I watch Ingenuity fly? 12:08 Am I looking forw…
 
My guest is Mick West, a game developer and writer. Mick has been studying UFO claims and contrail conspiracy theories for many years and has a useful toolkit to help identify unidentified objects in the sky. https://www.youtube.com/channel/UCF3UCTZiVg9wrIEzO7Om6jw 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀…
 
My guest is Dr. Klaus Pontoppidan, an astronomer and project scientist working with the James Webb Space Telescope. Klaus is on the committee that helped choose targets that the telescope will be studying once it flys (and it will). https://www.stsci.edu/~pontoppi/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀…
 
Astronomy Cast Ep. 602: The New Colors of Gamma Rays - Getting Shorter by Fraser Cain & Dr. Pamela Gay The Earth's atmosphere protects us from a Universe that is definitely trying to kill us. But it also blocks our view of the entire cosmos, like seeing X-rays and gamma radiation. Space telescopes are changing our view of the most extreme events in…
 
In this week's questions show, I explain why a heat-powered rover wouldn't work on Venus. I explain how spacecraft navigate, and wonder what James Webb's Deep Field survey will look like. 00:00 Start 00:54 Could the heat on Venus power a rover? 03:53 What if Ingenuity tips over? 05:42 How do spacecraft navigate? 08:36 Are SpaceX workers being prepa…
 
My guest is astronomer and science communicator Dr. Maggie Lieu. Lieu is a research fellow of machine learning and cosmology at the University of Nottingham and has been working on the upcoming Euclid space mission to help in the search for Dark Energy. https://maggielieu.com/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universe…
 
Astronomy Cast Ep. 601: Unexpected Light Pollution by Fraser Cain & Dr. Pamela Gay Day-by-day we're loosing our connection with the night sky. Already one third of humanity lives in so much light pollution that they can't see the Milky Way without a drive. And now satellite constellations are adding additional light pollution, even in the darkest s…
 
Professor Geraint Lewis is an astrophysicist focused on dark energy, gravitational lensing and galactic merger. He has recently published a paper that that investigates the nature of the anthropic principle, how the Universe needs observers. https://www.geraintflewis.com/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday…
 
You might know Dr. Sutter as a science communicator, but his doctorate is actually in particle physics. Paul is going to join me to talk about the Muon g-2 experiment and what it means for the Standard Model of physics. We'll probably also talk about the end of the EmDrive and other topics in space and astronomy. http://www.pmsutter.com/ 🚀 OUR WEBS…
 
Dr. Michio Kaku is a theoretical physicist and science communicator. His new book is called the God Equation, which traces the quest for a single theory of everything that will unite quantum mechanics and the theory of gravity. https://mkaku.org/home/ 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS…
 
In this week's questions show, I look at the rotation rate of pulsars, why NASA is such a fan of the term in-situ and what our plans are for exploring the Universe. 00:00 Start 00:49 Do pulsars ever slow down? 03:20 What's with in-situ? 05:17 Europa or Enceladus? 07:42 How far could Starships go? 09:27 Can planets be in orbital resonance? 10:44 Wou…
 
Professor Avi Loeb is a theoretical physicist from Harvard who has worked on many advances in space and astrophysics. He helped predict exoplanet discoveries using microlensing, worked on the mathematics for the Event Horizon Telescope, and has many fascinating opinions about the search for extraterrestrials. https://lweb.cfa.harvard.edu/~loeb/ 🚀 O…
 
My guest is Dr. James Davenport, a research assistant professor at the University of Washington. In addition to his research into magnetically active stars, James focuses on large-scale, time-domain astronomy. He's also a prolific communicator here on YouTube, breaking down complicated scientific topics and documenting astronomy meetings for the ge…
 
In this week's questions show, I tackle some challenging questions, like the ethics of sending humans to Mars, and whether it's better to focus on our efforts on Earth or on space exploration. Should we welcome a Carrington Event? Are there any serious competitors to SpaceX in the market right now? 00:00 Start 00:49 Is it ethical to send people to …
 
In this week's questions show, I talk about the stars we can see with our own eyes. Are they special? How long does it take solar flares to reach Earth? How will crimes on Mars be prosecuted? 00:00 Start 00:39 What types of stars can we see? 02:07 How long does it take for a solar flare to reach us? 04:19 Will I watch Foundation? 05:39 Crimes on Ma…
 
In this week's questions show, I answer questions about supernovae, how we could terraform the Moon, and why is Starlink so expensive? 00:00 Start 00:55 When is the next Star Party? 06:21 When will we have better images of exoplanets? 09:25 Am I afraid of another Carrington Event? 13:03 How do astronomers book telescopes? 16:33 Can giant stars have…
 
In this week's questions show, I talk about how dark matter seems to clump differently from regular matter. When will Starships stop exploding? And what do I think about the Stellina telescope? Image credit: Everyday Astronaut https://www.youtube.com/channel/UC6uKrU_WqJ1R2HMTY3LIx5Q 00:00 Start 00:36 Does dark matter clump? 05:35 When will Starship…
 
This week I talk to Dr. Jack Burns, the Principle Investigator for the Lunar FARSIDE telescope. This would be a radio telescope installed on the far side of the Moon that would be capable of observing the first stars and black holes during the Dark Ages and Epoch of Reionization. https://www.colorado.edu/project/lunar-farside/dr-jack-burns 🚀 OUR WE…
 
Today I'm interviewing Dr. Benjamin Zuckerman, emeritus professor from UCLA. Zuckerman is the author of over 200 papers, and was involved with the first direct imaging of a multi-planetary system. http://astro.ucla.edu/personnel/benjamin-zuckerman 🚀 OUR WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS: ══…
 
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