This is an picture of the Lunar Prospector spacecraft, which was used to
determine the size of the Moon's core.
Click on image for full size
Image courtesy of NASA
Earth's Moon--A Chip Off The Old Block?
News story originally written on March 19, 1999
Scientists have used the Lunar
spacecraft to find out that the Moon
has a small core. This supports
that the Moon was once part of Earth
created by a large impact
Lunar Prospector used gravity measurements to find out how big the Moon's core
is. The Moon's core
only is more than eight times smaller than the Earth's core
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