原始檔案 (1,449 × 2,000 像素,檔案大小:643 KB,MIME 類型:image/jpeg


描述 This is an artist's concept of a comet dust trail and dust tail. The trail can only be seen in the light of radiated heat. The dust trail is made of particles that are the size of sand grains and pebbles. They are large enough that they are not affected much by the Sun's light and solar wind. The dust tail, on the other hand, is made of grains the size of cigarette-smoke particles. These grains are blown out of the dust coma near the comet nucleus by the Sun's light.
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NASA:

作者 NASA Ames Research Center/K. Jobse, P. Jenniskens
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Public domain 本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zhNASA版權政策JPL圖像使用政策
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目前2006年1月31日 (二) 01:22於 2006年1月31日 (二) 01:22 版本的縮圖1,449 × 2,000(643 KB)Arnomane{{Information| | Description = This is an artist's concept of a comet dust trail and dust tail. The trail can only be seen in the light of radiated heat. The dust trail is made of particles that are the size of sand grains and pebbles. They are large enou

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