The nucleus of Comet Halley, as seen on close-up photographs taken by the Giotto spacecraft, is
A) roughly spherical, moderately cratered, and covered with dark dust.
B) roughly spherical, light-colored, icy, and covered with many cracks and grooves.
C) potato-shaped and darker than coal.
D) oblong, with a bright ice surface.
Correct Answer:
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Q113: The nucleus of a typical comet is
A)
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