Big Bang Crossword

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Across
  1. 2. The longest wavelength of visible light is this color.
  2. 3. Edwin ________ discovered that the different galaxies in the universe (that is groups of stars, nebulae and solar systems) were moving away from one another.
  3. 5. Before the Big Bang theory, scientists believed the universe was ________, that is, it had no beginning.
  4. 7. The Big Bang theory proposes that at the beginning of the universe all matter and energy was condensed into a very _______ space.
  5. 8. The Big Bang shows that the universe isn't eternal but had a _________.
Down
  1. 1. Georges Lemaître, who first proposed the theory of the Big Bang was a Catholic ________.
  2. 4. Light moves up and down and left and right as it moves forward. In other words it is a wave.
  3. 6. The reason that the Big Bang was proposed is because the universe is __________. That is, every object is moving apart from one another.