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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. 365: Gaia

Podcast: Play in new window | Download (0.0KB) The European Gaia spacecraft launched about a year ago with the ambitious goal of mapping one billion years in the Milky Way. That’s 1% of all the stars in our entire galaxy, which it will monitor about 70 times over its 5-year mission. If all goes...

Ep. 364: The COROT Mission

Podcast: Play in new window | Download (0.0KB) Before NASA’s Kepler mission searched for exoplanets using the transit method, there was the European COROT mission, launched in 2006. It was sent to search for planets with short orbital periods and find solar oscillations in stars. It was an...

Ep. 363: Where Did Earth’s Water Come From?

Podcast: Play in new window | Download (0.0KB) Where on Earth did our water come from. Well, obviously not from Earth, of course, but from space. But did it come from comets, or did the water form naturally right here in the Solar System, and the Earth just scooped it up?? Ep. 363: Where Did...

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