Concept information
Preferred term
Close encounters
Definition
- In a star cluster, coming across of two stars so closely that their orbits alter by their mutual gravitational attractions. As regards an asteroid or comet, a situation when it crosses the Moon's orbit and approaches the Earth with a risk of collision. (en)
Broader concept
- Celestial mechanics (en)
Narrower concepts
- Opik theory (en)
Editorial note
URI
http://astrothesaurus.org/uat/255
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