The giant-impact hypothesis, also called the Theia Impact, is an astrogeology hypothesis proposing that the Moon formed when the proto-Earth collided with a Mars-sized protoplanet approximately 4.5 billion years ago in the early Hadean eon.
Facts
Proposed YearSourced to the subject's own account Proposed BySourced to the subject's own account Connections
Proposed By
Additional Source Giant-Impact Hypothesis (Wikipedia)History section (edge: proposed-by, Daly)
Sources
1. Giant-Impact Hypothesis (Wikipedia)
WikipediaLead section (entity-description)
The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.
Lead section (proposed-year)
The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.
Lead section (proposed-by)
The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.
Proposed By: Reginald Aldworth Daly, History section (edge: proposed-by, Daly)
In 1946, Reginald Aldworth Daly of Harvard University challenged Darwin's explanation, adjusting it to postulate that the creation of the Moon was caused by an impact rather than centrifugal forces.
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