Yesterday

Ep. 791: Chang'e Sample Return

Astronomy Cast Ep. 791: Chang'e Sample Return By Fraser Cain & Dr. Pamela Gay Streamed live on Apr 20, 2026. Last week we talked about samples from other worlds delivered to Earth by meteorites. But sometimes you've gotta do the job yourself. Visit the far off place and bring the ... Show More

33m 15s

Apr 20

Ep. 790: Meteorites From Other Worlds

Astronomy Cast Ep. 790: Meteorites From Other Worlds By Fraser Cain & Dr. Pamela Gay Streamed live April 17, 2026. Even though humanity has returned samples from a fraction of the worlds in the solar system, the cosmos has delivered many more without us having to lift a finger. M ... Show More

33m 33s

Apr 6

Ep. 789: What Happens When a Planet's Star Dies

Astronomy Cast Ep. 789: What Happens When a Planet's Star Dies By Fraser Cain & Dr. Pamela Gay Streamed live on Mar 30, 2026. A star like the Sun only lasts about 10 billion years and it becomes a red giant and finally a white dwarf. This is catastrophic for some of the planets, ... Show More

29m 14s

Nov 2023

Life beyond Earth

Under the mighty radio Lovell Telescope at Jodrell Bank, Victoria Gill brings together some of the UK’s leading experts who were visiting the recent ‘bluedot’ science and music festival. They discussed the ongoing hunt for extraterrestrial life. We hear from Karen Olsson-Francis, ... Show More

38m 53s

Nov 2023

China's Mars Race, Neutron Star Gold & NASA's SPHEREx | S26E141

Welcome to the show notes for Episode 141 of the "Spacetime" podcast, hosted by Stuart Gary. In this episode, we delve into China's ambitious Mars mission, a novel cosmic source for gold, and NASA's upcoming SPHEREx mission. **Episode Highlights:** 1. **China's Mars Sample Return ... Show More

27m 54s

Aug 2016

Signs of life on planets, Royal Society Book Prize, Queen Bee control, Galactic Prom 29

What should we be looking for when searching for life on other planets beyond our solar system? Scientists urgently need to come to a consensus on this as a new suite of telescopes soon begins detecting. The space agency NASA has put together a virtual institute called The Nexus ... Show More

27m 49s

May 2023

Cosmic Queries – Cool Worlds with David Kipping

What is the weirdest planet ever discovered? Neil deGrasse Tyson and comedian Chuck Nice discover bizarre exoplanets like Erebus, the impacts of living on a habitable moon, hot Jupiters, and more with astronomy professor David Kipping.NOTE: StarTalk+ Patrons can listen ... Show More

48m 36s

Mar 2021

UFOs: Through the Wormhole Again

In 2017, a weird-looking space object called ʻOumuamua whipped past our sun. Now a Harvard scientist is suggesting it miiiight be an alien probe! So we’re revisiting this episode from a few years ago, where we ask: could aliens actually exist? Is there any chance they’ve visited ... Show More

36m 29s

Apr 2020

What If We Discovered Alien Life? - Guest: Jill Tarter

There's perhaps no bigger "What If" that will ever be asked. As long as we have been able to look up at the stars and understand the vastness of space, humans have pondered whether we are indeed alone in the universe. But perhaps no one has "been on the case" in a more serious wa ... Show More

1h 4m

Jul 2023

S26E85: Age of the Universe Reassessed // Astonishing Saturn // Growing Plants on the Moon

SpaceTime Series 26 Episode 85 *A retake on the age of the universe A new study suggests that the universe is actually 26.7 billion years old – that’s nearly twice as old as the 13.8-billion-year age previously believed. *New image from Webb reveal ... Show More

31m 48s

Ep. 707: What Goes Into A Sample Return ...