Universe

Edit Answers
12345678
Across
  1. 3. The explosion which is believed to have created the universe.
  2. 4. Small patterns of stars in the sky, each with its own name.
  3. 6. This gas is involved in the process of nuclear fusion in the core of a star.
  4. 8. The last stage of the development of a star before exploding.
Down
  1. 1. It includes all the space, all the matter and all the energy that space contains.
  2. 2. A group of stars gathered together (for example Milky Way).
  3. 5. The star which is the centre of the Solar system.
  4. 7. The force that pulls matter together.