Oort Cloud
See also: Oort cloud
English
Alternative forms
Etymology
Named after Dutch astronomer Jan Hendrik Oort.
Proper noun
- (astronomy) The Solar System's Oort cloud, extending from 50,000 to 100,000 astronomical units (approximately 1 light year) from the sun; supposedly the source of most comets around the Solar System.
Synonyms
Translations
cloud of comets in the Solar System
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