Big Bang

12345678910
Across
  1. 5. Energy emitted by the hot, dense early universe
  2. 6. The second most abundant element created in the early universe.
  3. 8. A gravitational bound system of stars, gas, and dust.
  4. 9. The stretching of light to longer wavelengths
  5. 10. The leading explanation for how the universe began.
Down
  1. 1. element, not a lot found but still present.
  2. 2. The most abundant element formed after the Big Bang.
  3. 3. Everything that exists: matter, energy, space, and time.
  4. 4. leftover thermal energy radiation
  5. 7. The action of the universe stretching and growing over time.