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The best way to find the exact distance to the Moon is to:
bounce lasers off the retroreflectors left on the surface by the Apollo landings.
What is the reason that it is so difficult to view Mercury from Earth?
Mercury is always very close to the Sun.
Mercury experiences extreme high and low temperatures between night and day because:
it has no atmosphere to moderate temperatures over the globe.
Comparing the densities of the Moon and Mercury, we find:
the Moon's is similar to Earth's crust, while Mercury's is similar to the entire Earth.
The rate of cratering in the lunar highlands shows us that
they range from 4.6 - 4.4 billion years old, on average.
The average rate of erosion on the Moon is far less than on Earth because
the Moon lacks wind, water and an atmosphere.
Which type of feature is the best evidence of lunar volcanism?
rilles associated with lava flows accompanying the mare formation
The presence of a Mercurian magnetic field surprised the planetary scientists on the Mariner 10 team because
the dynamo theory predicted that Mercury was spinning too slowly for one.
What are the major factors that rule out the co-formation theory for the Moon-Earth system?
Each body has a different density and a different chemical composition.
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