File:Keplers supernova.jpg

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current07:56, 5 January 2017Thumbnail for version as of 07:56, 5 January 20176,000 × 4,800 (4.23 MB)127.0.0.1 (talk)<p><b>X-ray, Optical & Infrared Composite of Kepler's Supernova Remnant</b><br> "On October 9, 1604, sky watchers -- including astronomer <a href="https://en.wikipedia.org/wiki/Johannes_Kepler" class="extiw" title="en:Johannes Kepler">Johannes Kepler</a>, spotted a "new star" in the western sky, rivaling the brilliance of nearby planets. "<a href="https://en.wikipedia.org/wiki/SN_1604" class="extiw" title="en:SN 1604">Kepler's supernova</a>" was the last exploding <a href="https://en.wikipedia.org/wiki/supernova" class="extiw" title="en:supernova">supernova</a> seen in our Milky Way galaxy. Observers used only their eyes to study it, because the telescope had not yet been invented. Now, astronomers have utilized NASA's three <a href="https://en.wikipedia.org/wiki/Great_Observatories_program" class="extiw" title="en:Great Observatories program">Great Observatories</a> to analyze the <a href="https://en.wikipedia.org/wiki/Supernova_remnant" class="extiw" title="en:Supernova remnant">supernova remnant</a> in infrared, optical and X-ray light." <a rel="nofollow" class="external autonumber" href="http://chandra.harvard.edu/photo/2004/kepler/more.html">[1]</a><br></p> <dl><dd>Color Code (Energy): <ul> <li> Blue: X-ray (4-6 keV), <a href="https://en.wikipedia.org/wiki/Chandra_X-ray_Observatory" class="extiw" title="en:Chandra X-ray Observatory">en:Chandra X-ray Observatory</a>, The higher-energy X-rays come primarily from the regions directly behind the shock front.</li> <li> Green: X-ray (0.3-1.4 keV), <a href="https://en.wikipedia.org/wiki/Chandra_X-ray_Observatory" class="extiw" title="en:Chandra X-ray Observatory">en:Chandra X-ray Observatory</a>; Lower-energy X-rays mark the location of the hot remains of the exploded star.</li> <li> Yellow: Optical, <a href="https://en.wikipedia.org/wiki/Hubble_Space_Telescope" class="extiw" title="en:Hubble Space Telescope">en:Hubble Space Telescope</a>; The optical image reveals 10,000 degrees Celsius gas where the supernova shock wave is slamming into the densest regions of surrounding gas.</li> <li> Red: Infrared, <a href="https://en.wikipedia.org/wiki/Spitzer_space_telescope" class="extiw" title="en:Spitzer space telescope">en:Spitzer space telescope</a>; The infrared image highlights microscopic dust particles swept up and heated by the supernova shock wave.</li> </ul> </dd></dl>
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