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Q19: In what way is Mercury's core unusual?
Q55: Although water and ammonia can produce Jupiter's
Q58: A rocky body between the orbits of
Q77: As a rotating gas cloud contracts, it
Q88: Visible sunspots lie in the<br>A) granulation in
Q108: waves cannot travel through the Earth's liquid
Q113: The Moon and the crustal rocks of
Q124: Contrast the densities of the terrestrial and
Q128: In what two ways is the orbit
Q152: Saturn's rings appear to be brighter and