Space

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