Which planet is closest in size to Earth?
A) Mars
B) Venus
C) Mercury
D) Jupiter
Correct Answer:
Verified
Q33: The Sojourner rover detected evidence for the
Q34: Mercury's thin atmosphere is composed mostly of
A)helium.
B)oxygen.
C)hydrogen.
D)sulfur
Q35: The time in early solar system history
Q36: The atmosphere of Mars is composed of
A)oxygen.
B)nitrogen.
C)carbon
Q37: What are exoplanets?
A)planets that harbor life (for
Q39: The Mars Exploration Rovers are known as
A)Spirit
Q40: What kinds of rocks are found in
Q41: Light from faraway galaxies can help reveal
Q42: The earliest fly-by missions to Mars are
Q43: The effects of a small meteor impact
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