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Correct Answer: B) A solar system.
Correct Answer: A) Sun.
Correct Answer: D) Stars farthest from Earth with the greatest speed.
Correct Answer: C) The universe is expanding.
Correct Answer: C) Common.
Correct Answer: B) The big bang theory.
Correct Answer: C) Astronomical Units.
Correct Answer: C) Water.
Correct Answer: C) Distance.
Correct Answer: A) George Gamow.
Correct Answer: A) A large body that does not give off light.
Correct Answer: D) Gamma Wave.
Correct Answer: A) It is a remnant of the Big Bng.
Correct Answer: D) Mass.
Correct Answer: A) Milky Way Galaxy.
Correct Answer: B) They are moving away from us.
Correct Answer: A) Force of gravity.
Correct Answer: A) Big bang theory.
Correct Answer: B) ASTEROIDS.
Correct Answer: D) Cosmology.
Correct Answer: B) Jupiter.
Correct Answer: D) Gravity.
Correct Answer: C) The Milky Way.
Correct Answer: B) To cave in.
Correct Answer: B) Nothing; space, matter, and time appeared with the Big Bang.