Gravity, Orbits, & Celestial Bodies

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Across
  1. 2. A giant ball of hot gas, often at the center of a solar system, whose energy generate from fusing atomic nuclei
  2. 3. A gravitationally-bound system of billions of stars and other objects that orbit a supermassive black hole
  3. 4. Gravity gets ___ when two objects get further apart
  4. 8. A celestial body that orbits a star with no other similarly-sized objects in its path
  5. 9. A piece of rock (usually small) from space that has hit the ground
  6. 10. A supermassive ___ is in the center of the galaxy
  7. 11. A small piece of rock that is still in space
  8. 12. This is an object that orbits a planet
Down
  1. 1. This contains all matter and space, with at least trillions of galaxies
  2. 2. A gravitationally-bound system of a star and the planets and other objects orbiting it
  3. 5. A rocky object in space, that is usually larger than a meter, but can be up to several miles across
  4. 6. An icy and/or dusty object orbiting around a star, which often has a ‘tail’
  5. 7. Gravity gets ___ when one or both objects get more mass
  6. 9. A small piece of rock that has entered Earth’s atmosphere