ScienceCasts: Did Earth Have Two Moons?

Jai Ho
Educational videos and stories
By Science@NASAFrom VimeoFebruary 14, 2026
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.
#Origins
#Lunar Gravity
#Farside of the Moon
#GRAIL
#Science Mission Directorate
#SMD
#ScienceCasts
#NASA
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