GRAIL Mission May Find a Former Second Moon - podcast episode cover

GRAIL Mission May Find a Former Second Moon

60-Second Space
Jan 09, 2012•1 min
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Episode description

The twin GRAIL craft will map lunar gravity and could find evidence for the remains within the moon of a former second satellite. John Matson reports
GRAIL Mission May Find a Former Second Moon | 60-Second Space podcast - Listen or read transcript on Metacast