In astronomy , what does "albedo" mean?
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Albedo is the fraction of solar energy reflected from the earth back into space. it is a measure of the reflectivity of the earth's surface. ice especially with snow on top of it, has a high albedo: most sunlight hitting the surface bounces back towards space.
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Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Wikipedia
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