Universe terms

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Across
  1. 2. Small body of rock that orbits around our sun.
  2. 5. A space that does not allow anything to escape from inside it.
  3. 8. A very small star.
  4. 9. A large mass of gas and dust in between stars.
  5. 12. A big body of mass that orbits the sun.
  6. 13. The action of the centre of a star becomes too dense and collapses. The star then explodes
  7. 15. all the planets orbiting the sun.
  8. 17. A gas that is visible at night.
  9. 19. The opposite of matter, when the two meet they destroy each other
  10. 20. A large planet that is mostly gas, usually with low density and either helium and hydrogen.
  11. 21. a planet that orbits a star in another galaxy
  12. 22. a big area that consists of stars, solar systems, and planets.
  13. 23. Similar to asteroids, they are bodies of ice and dust that orbit the sun.
Down
  1. 1. A quasar is a region that creates a lot of radiation
  2. 3. Similar to a normal planet but is smaller in size. Therefore, it can’t be classified as a planet.
  3. 4. The earth's natural satellite.
  4. 6. it orbits around just a larger body, the earth.
  5. 7. A very large group of stars.
  6. 10. It has gravity and makes up 95% of the universe along with dark energy.
  7. 11. A small body of matter that enters our solar system.
  8. 14. A rotating neutron star.
  9. 16. When a white dwarf explodes.
  10. 18. A galaxy that our planet is located in.