7.2 Galaxies

123456789101112
Across
  1. 2. a stars' life ends in a ____________ explosion
  2. 4. galaxy that is neither spiral nor elliptical
  3. 7. largest type of galaxy in the universe
  4. 9. a massive region of space that is very dense with gravity so strong that it prevents anything from escaping
  5. 10. largest objects in the universe consisting of many galaxies, hot plasma, and invisible dark matter
  6. 11. the Milky Way is a _______ galaxy
Down
  1. 1. a concentration of stars in a relatively small space held together by self gravitation
  2. 3. ________ clusters contain around a few hundred to a few thousand stars
  3. 5. ____________contain hundreds of thousands of stars
  4. 6. an invisible form of matter that is not able to interact with light or radiation
  5. 8. small galaxies that orbit larger ones
  6. 12. shaped with spiral-shaped arms radiating out from the galaxy's centre