show episodes
 
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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show series
 
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…
 
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