Space Crossword

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Across
  1. 5. The area of air and gas that envelopes Earth and other astronomical objects.
  2. 9. A system of two stars where one revolves around the other or both revolve around a common centre.
  3. 10. A group of stars that form a pattern.
Down
  1. 1. The universe.
  2. 2. A place in space where the pull of gravity is so strong that even light can’t get out.
  3. 3. A cavity in the ground of a celestial object, typically caused by explosions or meteor impact.
  4. 4. Small particles of matter in space.
  5. 5. Basic units of matter that every solid, liquid, gas and plasma is composed of.
  6. 6. The main theory explaining how the universe started. It states that 13.8 billion years ago, space expanded quickly to form the atoms that would produce stars and galaxies.
  7. 7. Objects made of frozen gases, rock and dust that orbit the Sun.
  8. 8. galaxy Small dim galaxies that are abundant in the universe.
  9. 9. A star that’s exhausted its own supply of carbon and burnt out.