Astronomy Cast Ep. 180: Albedo

Article Updated: 22 Jan , 2016

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Enceladus, the highest albedo in the Solar System. Image credit: NASA/SSI


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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