Impression de l'artiste sur le nuage d'Oort

• Contributeur: Science Photo Library / Alamy Banque D'Images
• ID de l’image: 2DE140T
• Taille du fichier: 81,1 MB (4,1 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 5324 x 5324 px | 45,1 x 45,1 cm | 17,7 x 17,7 inches | 300dpi
• Date de la prise de vue: 17 novembre 2020
• Photographe: MARK GARLICK/SCIENCE PHOTO LIBRARY

Informations supplémentaires

Oort Cloud of comets. Artwork showing the Oort Cloud (orange), a postulated cloud of comet nuclei surrounding the Solar System. It is thought to extend over a light year from the Sun (centre), up to a distance of about 100000 astronomical units (AU). One AU is the distance from the Earth to the Sun, some 150 million kilometres. Near the Solar System planets it has the form of a disc in the plane of the planets' orbits (ecliptic). Further out, it forms a spherical shell. The existence of the Oort Cloud is inferred from the orbits of long-period comets. These tend to orbit the Sun on elongated paths (some seen here) with their most distant point around 50000 AU from the Sun.

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