Everywhere we look in the Universe, we find that planets, stars, galaxies, and even the gas between them are all made of matter and not antimatter. Yet as far as we know, the laws of nature are symmetric between matter and antimatter: you can't create or destroy one without the other. So how did our Universe get to be the way it is? Come right up to the frontiers of our scientific knowledge and have a listen!

Although it's been only 13.8 billion years since the Big Bang, we can see objects as distant as 46.1 billion light years away. How is this possible? Ethan Siegel explains in the second Starts With A Bang podcast. Plus, how to see Comet Catalina in the December skies, and why it's on its way out of the Solar System forever.

This podcast is free to download and distribute in perpetuity thanks to the support of our Patreon donors at www.patreon.com/startswithabang?ty=h

In the first inaugural Starts With A Bang podcast, astrophysicist Ethan Siegel discusses the latest evidence for water on Mars, what it means for Earth and potential life on the surface, as well as other topics. Guest (and Patreon supporter) Maciek makes an appearance, and we discuss the future of physics and speculate on what the next great advance might be.

This podcast is free to download and distribute in perpetuity thanks to the support of our Patreon donors at https://www.patreon.com/startswithabang?ty=h