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The Universe

The Universe - Abstract Wallpapers Details

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Perseid meteor streaking over the light-bathed double arches in Arches National Park. ~via tmo-photo on Flickr

NASA before Powerpoint. Photo by JR Eyerman. 1960's.

An artists impression of the planets that Kepler has confirmed in the habitable zone.

Solar System - This is a montage of images taken by spacecraft. Included are (from top to bottom) Mercury, Venus, Earth (and Moon), Mars, Jupiter, Saturn, Uranus and Neptune. Image Credit: NASA/JPL

The estimate of how many stars in the Milky Way is 200 to 400 billion!