Contact: Gail Gallessich
University of California - Santa Barbara
Caption: This is a Chandra X-ray image of Tycho's supernova remnant. This Type Ia sueprnova was observed by Tycho Brahe in 1572, and today is just an expanding ball of gas. Astronomers used to have to wait years for a close, bright supernova to learn about them. Today big surveys are discovering supernovae by the thousands.
Credit: NASA/Chandra X-ray Observatory
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