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|Description||Twenty years ago, astronomers witnessed one of the brightest stellar explosions in more than 400 years. The titanic supernova, called SN 1987A, blazed with the power of 100 million suns for several months following its discovery on Feb. 23, 1987. Observations of SN 1987A, made over the past 20 years by NASA’s Hubble Space Telescope and many other major ground- and space-based telescopes, have significantly changed astronomers' views of how massive stars end their lives. Astronomers credit Hubble's sharp vision with yielding important clues about the massive star's demise. This Hubble telescope image shows the supernova’s triple-ring system, including the bright spots along the inner ring of gas surrounding the exploded star. A shock wave of material unleashed by the stellar blast is slamming into regions along the inner ring, heating them up, and causing them to glow. The ring, about a light-year across, was probably shed by the star about 20,000 years before it exploded.|
|Date||Released: 22 February 2007|
|Source||http://hubblesite.org/newscenter/archive/releases/2007/10/image/a/ (direct link)|
|Author||NASA, ESA, P. Challis, and R. Kirshner (Harvard-Smithsonian Center for Astrophysics)|
(Reusing this file)
|Orientation of image||1|
|Image resolution in width direction||1200|
|Image resolution in height direction||1200|
|Unit of X and Y resolution||2|
|Color space information||65535|
|Exif image width||655|
|Exif image length||512|
|Software used||Adobe Photoshop CS2 Macintosh|
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