PHOTOS: The Best of Hubble
The moon ushers in dawn: view from the international space station.
Final Frontier: Space Pictures From Far Reaches of the Universe
The Hubble Space Telescope found proof of a black hole at the center of the Andromeda galaxy, the only large galaxy visible to the naked eye in the northern sky. The black hole itself is invisible, but the inset shows a ring of reddish stars orbiting it.
(T. Lauer/National Optical Astronomy Observatory/NASA/ESA)
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