False-colour optical image of Comet West

Bildnummer 11883575
False-colour optical image of Comet West
False-colour optical image of Comet West,taken on 8 March 1976,showing the comet's twin tails; a broad,fan-shaped dust tail & a thin,structured gas tail. A comet's nucleus is a body of ice and dust moving on a long,elliptical orbit around the Sun. As it nears the Sun its surface is heated and some of the ice evaporates to form a coma,a glowing halo of ionised gas surrounding the nucleus. Ionised gas is also drawn outwards by the solar wind,forming the plasma tail. The released dust sometimes forms a second tail,pushed outwards by radiation pressure
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / NOAO
Bildgröße: 2925 px × 2942 px
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  • This image may not be used to state or imply NOAO endorsement of any company or product

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