Astronomy Cast
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Ep. 88: The Hubble Space Telescope
Our understanding of the cosmos has been revolutionized by the Hubble Space Telescope. The breathtaking familiar photos, like the Pillars of Creation, pale in comparison to the astounding amount of science data returned to Earth. Hubble's getting…
Ep. 87: The End of the Universe Part 2: The End of Everything
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…
Ep. 86: The End of the Universe Part 1: The End of the Solar System
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…
Ep. 85: Detectors
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…
Ep. 84: Getting Around the Solar System
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 …
Ep. 83: Wave Particle Duality
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…
Ep. 82: Space Junk
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…
Ep. 81: Questions on the Shape Size and Centre of the Universe
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…
Ep. 80: Craters
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 …
Ep. 79: How Big is the Universe?
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…
Ep. 78: What is the Shape of the Universe?
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 …
Ep. 77: Where is the Centre of the Universe?
There are some people – I’m not naming names – who think the universe revolves around them. In fact, for most of humankind, everybody thought that. It’s only been in the last few hundred years that scientists finally puzzled out that the Earth isn’t …
Ep. 76: Lagrange Points
Gravity is always pulling you down, but there are places in the solar system where gravity balances out. These are called Lagrange points and space agencies use them as stable places to put spacecraft. Nature is on to them and has already been using …
Student Questions: Curtis High School
This is our second installment in our series of student questions shows and these questions come to us from Curtis High School.
Ep. 75: Stellar Populations
After the big bang, all we had was hydrogen, a little bit of helium, and a few other trace elements. Today, we ’ve a whole periodic table of elements to enjoy, from oxygen we breathe to the aluminium cans we drink from to the uranium that powers some …
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