Tuesday, 17 January 2012
"Hubble V1" -- The Star that Unlocked the Observable Universe
"Hubble V1" -- The Star that Unlocked the Observable Universe: The NASA's Hubble Space Telescope has been focused in the image above on a single variable star that in 1923 altered the course of modern astronomy. V1 is a special class of pulsating star called a Cepheid variable that can...
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