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Comet Halley's Composition

Comet Halley's Composition


Date: 03 May 1986
Satellite: Giotto
Depicts: Plot of relative abundances for different solar system objects
Copyright: ESA

For several Solar System objects the abundances of key elements relative to silicon (Si) are plotted against the relative abundance of hydrogen to silicon. From top to bottom: oxygen (O), carbon (C) and nitrogen (N).

All of the comet's light elements (except nitrogen) were found in the same relative abundance as for the Sun. This means that Comet Halley consists of the most pristine (unprocessed) material known in the Solar System.
 

Last Update: 1 September 2019
5-Dec-2020 11:27 UT

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