Episode

Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Science & Medicine 37
Natural Sciences 12

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

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Ep. 180: Albedo

March 8th, 2010

Episode 212 of 489 episodes

Why are some objects in the Solar System bright while others are dim? Much of an object's brightness is caused by its albedo, or how well it reflects radiation from the Sun. If you want to know how big a distant moon, comet, or asteroid is, you've got to know its albedo.

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