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A Galaxy Cluster Makes Its Mark
Abell 1689, shown in this composite image, is a massive cluster of galaxies located about 2.3 billion light years away.
[more] (11 Sep 08)
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Watch the latest video podcasts on your computer, portable MP3 player, or HD TV. Now playing: Cat's Eye Nebula in 60 Seconds Plus HD. Or, view the standard def podcast. |
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 The Universe in a Jelly Bean Jar: Most of the Universe is dark. How can X-rays help reveal the secrets of this darkness? (flash) |
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 Bring the Chandra X-ray Observatory to your PC |
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 Images from NASA's Chandra & other telescopes are now available to the public through the free WWT software from Microsoft. |
