To the best of our knowledge, the Earth, Sun, and Moon are all the same age, about _______ years old.
A) 4.6 billion
B) 4000
C) 500 million
D) 1 billion
E) 100,000
Correct Answer:
Verified
Q25: Perhaps the most obvious of _ surface
Q26: The Earth's atmosphere is rich in _,
Q27: To measure vast distances in the solar
Q28: Heat left over from this planetary formation
Q29: The sun, its eight planets and their
Q31: Astronomers estimate that our galaxy contains _
Q32: As planetismals struck the growing Earth, their
Q33: _ are small, planetlike bodies.
A) Planetesimals
B) Moons
C)
Q34: Large, smooth, dark areas visible on the
Q35: _ is the largest planet in both
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