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Ep. 288 Phases of Matter

As we quickly learn with water, matter can be in distinct phases: solid, liquid, gas and plasma; it all depends on temperature. But why do different materials require different temperatures? And what's actually happening to the atoms themselves as the material switches phases?

Ep. 247: The Ages of Things

Podcast: Play in new window | Download (0.0KB) This is going to be one of the “how we know what we know” kind of shows. How do scientist determine the age of things? How do we know the age of everything from stone tools, to the age of the Earth, to the age of the very Universe. Ep....

Ep. 116: Molecules in Space

Podcast: Play in new window | Download (0.0KB) As part of her trip to England, Pamela had a chance to sit down with Oxford astrophysicist Chris Lintott and record an episode of Astronomy Cast. From the first stars to the newest planets, molecules and the chemistry that allows them to form affects all...

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