Oort Cloud
English
Etymology
Named after Dutch astronomer Jan Hendrik Oort.
Proper noun
Oort Cloud
- (astronomy) A roughly spherical region of space from 50,000 to 100,000 astronomical units (approximately 1 light year) from the sun; supposedly the source of most comets.
Synonyms
- Öpik-Oort Cloud
Translations
cloud of comets
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