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I always thought the sky was dark for the same reason we don't see the bright center of the Milky Way at night: dust. Space is mostly vacuum, but there is enou
by waynecochran 14y ago
I always thought the sky was dark for the same reason we don't see the bright center of the Milky Way at night: dust.
Space is mostly vacuum, but there is enough dust over the vast volumes to occlude light.
- T-hawk 14y agoDust does not resolve the paradox. Dust occludes by absorbing the light, which means that the dust would eventually heat up enough to glow itself. Dust can't reduce the amount of radiation and energy in the universe, just shift it in time or wavelength or direction.