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Correct Answer: B) Is the galaxy that contains our Solar System.
Correct Answer: C) Singularity.
Correct Answer: D) All of these options.
Correct Answer: C) Cosmology.
Correct Answer: C) Neptune.
Correct Answer: A) Thousands of times farther away.
Correct Answer: B) Galaxy.
Correct Answer: A) Because the moon revolves around the earth.
Correct Answer: D) Redshift.
Correct Answer: A) Orbits of the planets around the Sun.
Correct Answer: C) Earth's tilt and revolution.
Correct Answer: C) Galaxy.
Correct Answer: D) Hydrogen.
Correct Answer: B) In a belt between the inner and outer planets.
Correct Answer: D) C, A, B.
Correct Answer: D) Nebula.
Correct Answer: B) In outer space.
Correct Answer: D) Eight.
Correct Answer: C) It must be massive enough to clear objects from its orbit.
Correct Answer: D) Stars and galaxies have stopped forming.
Correct Answer: C) To crash, to strike violently together.
Correct Answer: D) Universe.
Correct Answer: A) We discover new information and new technology.
Correct Answer: A) Nebula.
Correct Answer: B) Planet.