Oct 6

Ep. 766: How Spacecraft End

Astronomy Cast Ep. 766: How Spacecraft End By Fraser Cain & Dr. Pamela Gay End-of-Life Planning for Your Spacecraft! Streamed live October 1, 2025. Your spacecraft has reached the end of its mission. You’ve done everything you can to keep it operational, but now it’s time to say ... Show More

30m 28s

Sep 29

Ep. 765: Rockets vs The Environment

Astronomy Cast Ep. 765: Rockets vs The Environment By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 22, 2025. We don’t launch a lot of rockets every year, so their impact on the environment is minimal compared to other forms of transportation. But that number is steadily incr ... Show More

35m 18s

Sep 22

Ep. 764: Cleared For Launch!

Astronomy Cast Ep. 764: Cleared For Launch! By Fraser Cain & Dr. Pamela Gay Streamed live September 17, 2025. This week, we look at the process behind rockets getting licensed to launch, and everyone around the pad getting notified to stay away as T-0 approaches. (Can you say "er ... Show More

33m 3s

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 to this en ... 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

39m 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 reveals astonishing Saturn and its rin ... Show More

31m 48s

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