Galaxies

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Across
  1. 2. Typically the center of a galaxy where gravity is so great that nothing escapes
  2. 6. An estimate of the number of stars in a galaxy (one of: Millions, Billions, Trillions)
  3. 8. The shapes of galaxies that do not have any regular shape. Contains the youngest stars and lots of gas and dust.
  4. 9. A huge group of stars, gas and dust that is held together by gravity
  5. 10. The force that holds together the universe, galaxies, and solar systems
Down
  1. 1. Dense cloud-like collection of gas and dust in space
  2. 3. The shape of galaxy that is like a flattened circle. Contains the oldest stars and very little gas or dust.
  3. 4. The shape of galaxy that has a central bulge and looks like a pinwheel (ex. The Milky Way)
  4. 5. The galaxy we are part of
  5. 7. These features (like our own sun) are the reason we are able to "see" galaxies because they emit light