Ep. 62: Uranus

This week, we’re on to the next planet in the solar system. We don’t know a whole lot about this blue gas planet, but today we’ll cover some of the neat stuff we do know, including it’s faint rings, sideways axis of rotation and its rocky core – a first in the gas planets we’ve […]




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Ep. 61: Saturn’s Moons

We know that delaying this show one more week would be too dangerous, so here you go: Saturn’s moons. These are some of the most interesting objects in the Solar System, from the spongy Hyperion, to the geysers on Enceladus, to the rainy, misty, oceany Titan. They’ve kept Cassini busy for years, and scientists will […]




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Ep. 60: Questions Show #7

It’s about time for a question show again, so we’ll have one last interruption to our planetary tour, to deal with the questions that arose from our inflation show. So if you still don’t understand inflation, take a listen to this week’s show and as always, send us your questions. Episode 60: Questions on Inflation […]




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Ep. 59: Saturn

Returning to our tour of the solar system, let’s voyage away from the largest planet to the second largest, Saturn. Once again, we’ll break up our visit because there’s lots to talk about. This week, we talk about Saturn and its famous rings. Next week, we’ll discuss its many moons. Episode 59: Saturn (13.2MB) 




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Ep. 58: Inflation

We interrupt this tour through the solar system to bring you a special show to deal with one of our most complicated subjects: the big bang. Specifically, how it’s possible that the universe could have expanded faster than the speed of light. The theory is called the inflationary theory, and the evidence is mounting to […]




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Ep. 57: Jupiter’s Moons

Last week we talked about Jupiter and we could sense right away it would be too much to handle. This week, we’ll talk about Jupiter’s moons – how many are there? What makes them so interesting? Is it true that the most likely place in the solar system to find life (other than Earth) is […]




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Ep. 56: Jupiter

Last week we talked about rubble, this week we’re going to dig into the largest planet in the Solar System: Jupiter, but will it all just be hot gas? There’s so much to talk about, we’ve decided to break this up into two shows. This week we’re going to just talk about Jupiter, and then […]




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Ep. 55: The Asteroid Belt

In the last few weeks we’ve had many emails saying that our tour of the solar system would not be complete without a show on the asteroid belt. Your wish is our command! We talked about Mars in episode 52, and now that we’re back on track our next stop is the asteroid belt. Episode […]




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Ep. 54: Questions Show #6

It’s been a while, so let’s catch up with the listener questions. We’ve got some easy ones, some hard ones and probably some impossible ones. We talk about our universe as a black hole, tidal locking of planets like Uranus, colours of stars at different ages, our universe’s birthday and more. Episode 54: Questions Show […]




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Ep. 53: Astronomy in Science Fiction

This is a very different episode of Astronomy Cast. As we mentioned last week, Pamela recently attended the Dragon*Con science fiction convention in Atlanta, Georgia. While she was there, she participated in a special live edition of Astronomy Cast with special guest Dr. Kevin Frazier. Kevin is a NASA scientist, and the science consultant for […]




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