Night Sky Observer: Astronomy Cast Podcast

Today's Astronomy, Space and Science Podcasts

Astronomy Magazine Podcast
NASA Podcasts
Lunar And Planetary Institute Podcast
Jodrell Bank Astronomy Podcast
Astronomy Cast Podcast
Science@NASA Podcast
Silicon Valley Astronomy Lectures Podcast

Spitzer Space Telescope Podcast
Earth & Sky Radio Show Podcast
Spitzer Space Telescope Podcast
PBS Nova Podcast
Thinktank Planetarium Podcast
Cranbrook Space Odyssey Podcast

Astronomy Cast (Audio Podcast)
Ep. 87: The End of the Universe Part 2: The End of Everything 4 May 2008 at 5:00pm Hopefully you've all recovered from part 1 of this set, where we make you sad about the future of the humanity, the Earth, the Sun and the Solar System. But hang on, we're really going to bring you down. Today we'll look far far forward into the distant future of the Universe, at timescales that we can barely comprehend. Read more... Ep. 86: The End of the Universe Part 1: The End of the Solar System 27 Apr 2008 at 5:00pm This is a show we wanted to do since we started Astronomy Cast but we always thought it was too early. We wanted you to know that we're positive, happy people with enthusiasm for astronomy and the future. It's time for some sadness. It's time for a grim look to see what the future holds for the Universe. This week we stay close to home and consider the end of humanity, the Earth, the Sun, and the entire Solar System. Next week we'll extend out to the very end of the Universe. Read more... Ep. 85: Detectors 20 Apr 2008 at 5:00pm Our senses can only detect a fraction of the phenomena happening in the Universe. That's why scientists and engineers develop detectors, to let us see radiation and particles that we could never detect with our eyes and ears. This week we'll go through them all, so you can understand how we see what we can't see. Read more... Ep. 84: Getting Around the Solar System 13 Apr 2008 at 5:00pm Have you ever wondered what it takes to get a spacecraft off the Earth and into space. And how managers at NASA can actually navigate a spacecraft to another planet? And how does a gravity assist work? And how do they get them into orbit? And how do they land? So many questions? Read more... Ep. 83: Wave Particle Duality 6 Apr 2008 at 5:00pm Have you ever heard that photons behave like both a particle and a wave and wondered what that meant? It's true. Sometimes light acts like a wave, and other times it behaves like a little particle. It's both. This week we discuss the experiments that demonstrate this, explain how scientists figured it all out in the first place. What does wave/particle duality have to do with astronomy? Well, everything, since light is the only way astronomers can see out into the Universe. Read more... Ep. 82: Space Junk 30 Mar 2008 at 5:00pm We're polluting every corner of our own planet, so it only makes sense that we'll take our trashy habits out into space with us. This week we look at the myriad of ways we're messing up space, from the trash orbiting the planet to the radiation we're leaking out into space. Read more... Ep. 81: Questions on the Shape Size and Centre of the Universe 23 Mar 2008 at 5:00pm As predicted we got a lot of questions from people about our trilogy of shows on the size, shape and centre of the universe. Today we'll do our best to clear them all up.As always, if you're still confused drop us an email to info at astronomycast dot com. Read more... Ep. 80: Craters 16 Mar 2008 at 5:00pm Pamela's attending the 39th Lunar and Planetary Sciences Conference, and you know what that means: the Moon? and planets! When you think of the Moon, you think of craters. In fact, that's a big theme this week at the conference, so Pamela took it as inspiration. Here you go, the week we drove the show into a crater. Wait? there's got to be a better way to describe this. Read more... Ep. 79: How Big is the Universe? 9 Mar 2008 at 5:00pm We?re ready to complete our trilogy of discovery about the universe. We?ve learned that it has no center; rather everywhere is its center and nowhere. We discovered that the universe seems to be flat. It not open, it is not closed, it is flat. If that doesn?t make any sense, you need to listen to the previous show because there?s no way I could give that an explanation. So now we want to know: ?How big is it?? Does it go on forever or is it finite in scale? How much of it can we see? Read more... Ep. 78: What is the Shape of the Universe? 2 Mar 2008 at 4:00pm Some of the biggest questions in the universe depend on its shape. Is it curved? Is it flat? Is it open? Those may not make that much sense to you, but in fact it?s very important for astronomers. So which is it? How do we know? How did we figure it out? Why does it matter? Read more...