The Earth and Moon
are like identical
twins, made up of
the exact same
materials -- which
is really strange,
since no other
celestial bodies
we know o
(more)
The Earth and Moon are like identical twins, made up of the exact same materials -- which is really strange, since no other celestial bodies we know of share this kind of chemical relationship. What's responsible for this special connection? Looking for an answer, planetary scientist and MacArthur