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Correct Answer: A) Radio waves.
Correct Answer: A) The universe expanded.
Correct Answer: B) If it has a short wavelength.
Correct Answer: A) Big bang theory.
Correct Answer: A) Star.
Correct Answer: B) About 13.8 billion years ago.
Correct Answer: D) Elliptical.
Correct Answer: D) Galaxies stay in one place due to the Big Bang.
Correct Answer: D) Star.
Correct Answer: B) Cosmic microwave background radiation.
Correct Answer: A) Pulls all matter together.
Correct Answer: A) Temperature.
Correct Answer: B) The big crunch.
Correct Answer: D) Super nova.
Correct Answer: C) Universe, galaxy, solar system, star, planet.
Correct Answer: D) 225 million.
Correct Answer: B) It orbits Earth.
Correct Answer: B) Black holes.
Correct Answer: B) Black Hole.
Correct Answer: C) Billions of galaxies.
Correct Answer: A) Big Bang Theory.
Correct Answer: B) The further away a galaxy is, the faster it is receding.
Correct Answer: A) One day; one year.
Correct Answer: B) Jupiter, Saturn, Uranus, and Neptune.
Correct Answer: B) From Earth to various galaxies.