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What if the Earth had two moons?and nine other thought-provoking speculations on the solar systemBookby Comins, Neil F., 1951-
Published 2010 -
The story of the Earth in 25 rockstales of important geological puzzles and the people who solved themBookby Prothero, Donald R.
Published 2018 -
by Shumsky, Susan G.
Published 2021