The universe

Edit Answers
12345678
Across
  1. 1. A cosmic snowball of frozen gases, rocks, and dust that orbits the sun.
  2. 3. One of the most accepted theories of the origin of the universe
  3. 7. Centauri This nearest star to our sun is 4.2 light-years away
  4. 8. the distance a beam of light travels in a single Earth year,
Down
  1. 2. It is our galaxy. It is of spiral shape
  2. 4. The large group of stars
  3. 5. Gas giants are large planets composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core.
  4. 6. A huge cloud of gases, mainly made up of hydrogen and helium