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Ep. 369: The Fizeau Experiment

Podcast: Play in new window | Download (0.0KB) Light is tricky stuff, and it took scientists hundreds of years to puzzle out what this stuff is. But they poked and prodded at it with many clever experiments to try to measure its speed, motion and interaction with the rest of the Universe. For example,...

Ep. 367: Spitzer does Exoplanets

Podcast: Play in new window | Download (0.0KB) We’ve spent the last few weeks talking about different ways astronomers are searching for exoplanets. But now we reach the most exciting part of this story: actually imaging these planets directly. Today we’re going to talk about the work...

Ep. 366: HARPS Spectrograph

Podcast: Play in new window | Download (0.0KB) Almost all the planet hunting has been done from space. But there’s a new instrument installed on the European Southern Observatory’s 3.6 meter telescope called the High Accuracy Radial velocity Planet Searcher which has already turned up 130...

Ep. 351: Asteroid Adventures

Podcast: Play in new window | Download (0.0KB) Astronomy Cast’s 2014/15 season begins! With Rosetta’s arrival at Comet 67/P, we’re about to see a comet up close and personal. What will it take to explore, exploit and enjoy the asteroids and comets hurtling around our Solar System. And...

Ep. 337: Photometry

Podcast: Play in new window | Download (0.0KB) There’s a lot you can learn by just staring at an object, watching how it changes in brightness. This is the technique of photometry, and it has helped astronomers discover variable stars, extrasolar planets, minor planets, supernovae, and much...

Ep. 334: Chelyabinsk

Podcast: Play in new window | Download (0.0KB) Around this time last year a space rock crashed into the Earth above Chelyabinsk, Russia. It brightened the skies for hundreds of kilometers, broke windows and injured many people. Let’s look back at the event. What happened, and what did we...

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