Space

123456789
Across
  1. 4. the area of gas and air that envelops out earth
  2. 6. the region between Jupiter and mars that contains the largest population of asteroids in our solar system
  3. 8. star sailor
  4. 9. a scientist that studies the universe
Down
  1. 1. a star that’s exhausted from its own supply of carbon and burnt out
  2. 2. a system of two stars that revolve around each other or both revolve around a common centre
  3. 3. particles thought to exist in space that don’t absorb, reflect, or emit light and thus can’t be observed
  4. 5. the main theory explaining how the universe started. It states that 13.8 billion years ago, space expanded quickly to form the atoms would form stars and galaxies
  5. 7. a small icy object that orbits the sun and has a long “tail” of gas
  6. 8. basic units of matter that every solid, liquid, gas, and plasma is composed of