ScienceCasts: Did Earth Have Two Moons? (2011)
2011 · Short film · 2 min
Synopsis
Did our planet once have two moons? Some researchers say so. Moreover, the missing satellite might still be up there--splattered across the far side of the Moon. NASA's GRAIL mission could help confirm or refute the "two moon" hypothesis.
Uploader's description on archive.org
Details
- Running time
- 2 minutes
- Collection
- NASA
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