Space & Astronomy
Cool brown dwarf star discovered
By T.K. Randall
October 23, 2011 · 11 comments
Image Credit: NASA
A star so cold that you could go for a walk on it has been found by the Spitzer space telescope.
Stars are usually extremely hot, but this particular brown dwarf is so cool that a human could walk around on its surface and experience temperatures not much warmer than an average summer's day. "This planet-like companion is the coldest object ever directly photographed outside our solar system," said Professor Kevin Luhman.
The Spitzer Space Telescope has captured images of the coldest companion object to be directly imaged outside our solar system, U. S. scientists say.
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