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Correct Answer: B) 3.
Correct Answer: A) Spectrum.
Correct Answer: A) That the planets move in eliptical (oval shaped) orbits around the sun.
Correct Answer: B) Atomic.
Correct Answer: C) Were/couldn't.
Correct Answer: B) White dwarf.
Correct Answer: A) Singularity.
Correct Answer: C) Faster.
Correct Answer: A) Electron.
Correct Answer: A) Energy left over from the big bang.
Correct Answer: C) Main Sequence Star, Red Giant, Supernova.
Correct Answer: C) Electromagnetism; Gravity.
Correct Answer: B) Recessional velocity.
Correct Answer: A) Proton.
Correct Answer: A) 15.
Correct Answer: C) Its temperature.
Correct Answer: C) Gravity and Strong Force.
Correct Answer: A) Dark Matter.
Correct Answer: C) Gravity.
Correct Answer: D) IC 1101.
Correct Answer: B) Big Bang Theory.
Correct Answer: C) Sound and light.
Correct Answer: D) 13.7 billion years ago.
Correct Answer: A) Sun.
Correct Answer: D) Galaxies.