English Explanatory Dictionary

giant impact theory

English dictionary entry

Meanings

noun
  1. The theory that the Moon was formed from the impact of the Earth with a hypothetical protoplanet some 4.5 billion years ago during the Hadean eon, first proposed by geologist Reginald Daly.

Word forms

giant impact theory giant-impact theory

Synonyms

giant-impact hypothesis Theia Impact
This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.
Back to search All on G Russian dictionary Dahl dictionary