Artwork Representing The Oort Cloud Of Comets
by Science Photo Library
Title
Artwork Representing The Oort Cloud Of Comets
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Oort cloud. Artwork representing the Oort cloud of comet nuclei thought to form a spherical shell around the solar system. The Sun is at centre. The cloud is found between 2000 and 100,000 astronomi- cal units (AU; the distance from the Earth to the Sun) from the Sun. The Oort cloud contains billions of comet nuclei. At this distance from the Sun they are frozen lumps of ice with no tails. It is thought that some comet nuclei may be forced towards the inner solar system by the motions of nearby stars and other bodies with significant gravitational fields. The entire mass of all the bodies in the Oort cloud is reckoned to be around 50 times that of the Earth.
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February 17th, 2021
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