Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Science & Medicine 15
Natural Sciences 5

Astronomy Cast brings you a weekly fact-based journey through the cosmos.


Episode 22: Variable Stars

February 5th, 2007

Episode 22 of 460 episodes

Our Sun has been around for billions of years, and will last for billions more. We're lucky, it's pretty stable and regular as stars go, only changing in brightness a little now and then. But there are stars out there that change dramatically; astronomers call them variable stars, and they demonstrate just how bizarre and dangerous the Universe can be.

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