Astronomy Camp Day 2

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Across
  1. 4. The beginning of the universe.
  2. 6. How hard it is to stop a moving object.
  3. 8. On Earth this is made up of nitrogen, oxygen and carbon dioxide.
  4. 9. Often called Earths twice due to their similar size and mass.
  5. 10. An ice giant in our solar system.
Down
  1. 1. Causes things to get further apart from one another.
  2. 2. A period of rapid expansion in the early universe.
  3. 3. Acronym for the oldest light we can see in the universe.
  4. 5. Jupiter and Saturn are both this type of planet.
  5. 7. How much "stuff" there is in an object.