Add Yahoo as a preferred source to see more of our stories on Google. NASA's Chandra X-ray Observatory releases its longest-spanning video of X-ray data yet. - NASA / CXC / SAO / Pan-STARRS ...
A deep space photographer spent months photographing the Crab Nebula and found his composite image, when compared with the 1999 image from the Hubble Space Telescope, shows the supernova's expansion.
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