galaxy project travis nguyen

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Across
  1. 4. when a big star dies from an explosion
  2. 6. The biggest type of black hole
  3. 8. What every galaxy and thing is in
  4. 12. The substance that doesn't react with light and takes up most of the space in a galaxy
  5. 14. The galaxy that will collide with the Milky Way in 4-5 billion years
  6. 16. Whatever is trapped inside of it can't get out, even light.
  7. 18. Word to describe small galaxies
  8. 19. How much light is emitted from a star/celestial body
  9. 20. The leading nonreligious theory of how the universe began
Down
  1. 1. A luminous body that is visible in the sky
  2. 2. A star that suddenly lights up and becomes a new star
  3. 3. The center of objects in space like the Sun and Earth
  4. 5. The force that holds galaxies together
  5. 7. The word to describe galaxies that have a circular shape and spin
  6. 9. A word that describes a galaxy that doesn't have much structure and has a smooth image
  7. 10. The galaxy that we reside in
  8. 11. Word to describe a galaxy that doesn't have much symmetry and has little, old stars
  9. 13. The field of science in which galaxies are involved in
  10. 15. When lots of galaxies are held together by gravity
  11. 17. Relating to the universe or cosmos