Thank you for joining us on Space Nuts where we talk astronomy and space science every week. I hope you well. Coming up in this edition indestructible asteroids - yep they've got some samples they've hit him with a hammer and nothing happened and we're talking asteroids that are made of rubble. But it turns out to be more like reinforced concrete. We're also going to look at machine learning or artificial intelligence for the discovery, maybe, of extraterrestrial life. And we're going to answer some questions about gravity and astronauts. What happens when they're going maybe from here to Mars? What's the gravity like compared to orbiting the planet or lack of there? So how is a light year measured? Very carefully. And what pushes rockets in space? We will tell you all of that if we can. Maybe we won't. Coming up on this edition of Space Nuts. Astronomy, Science, Space, and Stuff. Space Nuts Episode 338 with Professor Fred Watson & Andrew Dunkley Download from your favorite podcast distributor or visit our website at www.spacenuts.io Sponsor Links: The Space Nuts Premium edition is now available on Spotify for our Supercast subscribers. To access the premium feed, just log in to your Spotify account and do a search. Use your current Supercast subscriber details to unlock the premium content. If you’d like to become a subscriber, just visit https://spacenuts.supercast.tech and sign up. You even get a 30-day free trial to see if it’s right for you. Nothing to lose. Premium Editions also now available via subscription through Apple Podcasts…again with a 30-day free trial. For more Space Nuts, visit our websites. Links: https://linktr.ee/biteszHQ New: Listen to Space Nuts on your favorite app with the Universal listen link: https://spacenutspodcast.com/listen Are you a Discord fan? If so…come and join our ever-growing community. https://discord.gg/V4822WSmnJ If you find value in Andrew & Fred’s work, you might like to consider buying them a coffee.