In fact, the prevalent theory for the formation of our solar system is that a cloud of gas and…
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What Color is Venus When Viewed With a Human Eye?
Venus tends to look bright white to the human eye. Check out the Nine Planets web site description of…

What Causes the Earth-Moon Gravitational Tidal Lock?
I believe that this question has been answered before in our answer to “The Earth-Moon Spin-Orbit Resonance” question. The…

Why is the Moon Moving Away From the Earth When Orbiting Black Holes Ultimately Collide?
The reason that the Moon is slowly moving away from the Earth is due to the interaction of the…

How to Interpret the Observation Date Format from the Minor Planet Center (MPC)
I believe that the observation date format which includes a decimal on the day value indicates fractions of a…

Why is the Earth Less Cratered than the Moon?
Even though the Earth and the Moon have been bombarded by the same flux of impacting objects, the evidence…