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Moon in x-rays.gif

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An image of the moon as seen in X-rays from X-ray fluorescence initiated by solar X-ray flux. Astronomy picture of the day caption: "This x-ray image of the Moon was made by the orbiting ROSAT (Röntgensatellit) Observatory on June 29, 1990. In this digital picture, pixel brightness corresponds to x-ray intensity. Consider the image in three parts: the bright hemisphere of the x-ray moon, the darker half of the moon, and the x-ray sky background. The bright lunar hemisphere shines in x-rays because it scatters x-rays emitted by the sun. The background sky has an x-ray glow in part due to the myriad of distant, powerful active galaxies, unresolved in the ROSAT picture but recently detected in Chandra Observatory x-ray images. The dark side of the Moon's disk shadows this X-ray background radiation coming from the deep space. But why isn't the dark half of the moon completely dark? New Chandra results also suggest that a few x-rays only seem to come from the shadowed lunar hemisphere. Instead, they originate in Earth's geocorona or extended atmosphere which surrounds the orbiting x-ray observatories." The measured lunar X-ray luminosity of ~ 1.2 x 1012 erg/s makes the Moon one of the weakest known non-terrestrial X-ray source.

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"Images from the X-ray sky taken with the ROSAT telescope. All rights reserved © Max-Planck-Institut für extraterrestrische Physik The X-ray images of MPE are produced by the SASS/EXSAS software MPE, ESO-MIDAS. The ROSAT project is managed by the Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Germany on behalf of the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF)."

This page uses content from the Wikimedia Commons. The original content was at File:Moon in x-rays.gif. The list of authors can be seen in the page history. As with this Psychology Wiki wiki, that portion of the content of Wikimedia Commons is available under the GNU Free Documentation License.

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current02:09, November 5, 2007Thumbnail for version as of 02:09, November 5, 2007631 × 510 (150 KB)PhloxBot (Talk | contribs)An image of the moon as seen in X-rays from X-ray fluorescence initiated by solar X-ray flux. Astronomy picture of the day caption: "This x-ray image of the Moon was made by the orbiting ROSAT (Röntgensatellit) Observatory on June 29, 1990. In this digit

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