Why is the regolith light-colored in the highlands, while darker in the maria?
A. The highland regions receive more sunlight than the maria.
B. The highland regolith is younger, and therefore lighter in color.
C. Lunar regolith is the same color everywhere, but the maria reflect less light.
D. The regolith in the maria has a different mineral composition.
Answer: D
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Indicate whether the statement is true or false
One of the lines of Hydrogen has a wavelength of 121.6 nm. If a cloud of Hydrogen gasis moving TOWARDS us at 200km/s, what will we detect?
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Indicate whether the statement is true or false