science words

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Across
  1. 3. disc a rotating circumstellar disc of dense gas and dust surrounding a newly formed star.
  2. 5. the explosion of a star.
  3. 6. the force that pulls all objects in the universe toward each other.
  4. 7. a big cloud of dust and gas between stars.
Down
  1. 1. wind hot gas that comes from the sun
  2. 2. a body of hot gasses that makes its own light and heat.
  3. 3. a body orbiting around a sun, with its own gravity and orbit.
  4. 4. An abject that orbits a planet
  5. 6. a huge collection of gas,dust and billions of stars and their solar systems.
  6. 8. bang creation of the universe.