The Universe

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Across
  1. 3. The name of our galaxy.
  2. 5. an area of such immense gravity that nothing—not even light—can escape from it
  3. 10. This is a meteor that reaches the surface of the Earth or another planet.
  4. 11. the stellar core left behind after a dying star has exhausted its nuclear fuel.
  5. 12. Made up of gas and fine particles of dust particles. Can be luminous or dark.
  6. 13. To do with the sky or the heavens.
  7. 15. the most common and coolest star of the universe
Down
  1. 1. A massive collection of hundreds of millions of stars, all orbiting about a common centre.
  2. 2. A large body that revolves around a star. They shine by reflected light.
  3. 3. A small solid body entering a planet's atmosphere from outer space.
  4. 4. A star that explodes and suddenly gets very bright and then fades back to its previous illumination in a few months or years.
  5. 6. Imagined patterns among the stars. Examples include Crux Australis (the Southern Cross), Orion (the Hunter) and Taurus.
  6. 7. A small body that revolves around a (larger) planet.
  7. 8. year The distance traveled by light in one year.
  8. 9. System Consisting of the Sun; the nine planets and their satellites, the asteroids, comets, meteoroids and interplanetary dust and gas
  9. 14. A sphere of great mass, that produces energy by means of nuclear fusion reactions.