File:Comet dust microscopic photo.jpg
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Comet_dust_microscopic_photo.jpg (545 × 400 pixels, file size: 63 KB, MIME type: image/jpeg)
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DescriptionComet dust microscopic photo.jpg |
English: Displayed in a close-up under an electron microscope, this tiny bit ofcosmic dust may be ourfirst sample of a passing comet. Less than one-tenth of a millimeter across, the particle is composed ofmillions ofeven tinier crystals. Although chemically similar to some meteorites, itsfluffy, crystalline structure is unlike that of any known meteorite. Interplanetary dust particles like this are trapped in special collectors flown aboard high-altitude aircraft. Their interplanetary origin is established by analyzing the gases that they trapped from the Sun while still in space. The interplanetary dust is believed to come from comets, which shed material as they are warmed by the Sun. It may be possible to collect material from a particular comet when one passes close enough to the Earth some day. |
Source | NASA: http://history.nasa.gov/EP-177/ch2-4.html |
Author | NASA |
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Transferred from en.wikipedia to Commons using FtCG.
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Date/Time | Dimensions | User | Comment |
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09:05, 27 December 2011 | 545 × 400 (64,600 bytes) | w:en:Bulwersator (talk | contribs) | (bigger - http://history.nasa.gov/EP-177/ch2-4.html) |
14:05, 3 November 2004 | 172 × 129 (18,779 bytes) | w:en:Omontero (talk | contribs) | (Comet dust microscopic photo) |
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current | 09:07, 27 December 2011 | 545 × 400 (63 KB) | Bulwersator (talk | contribs) | Transferred from en.wikipedia: see original upload log above |
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6d9e4e29436d14994fa3ba869621a372e501ab2e
64,600 byte
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