Across
- 1. Cosmic _________ Radiation
- 3. The study of the universe
- 4. Scientists can estimate the age of the universe by finding the age of the oldest _____
- 6. The type of bread the universe was compared to in the article
- 7. The type of energy the explosion that first formed the universe released
Down
- 1. The big bang happened 13.7 _______ years ago according to the article
- 2. Finding the ______ between galaxies can help scientists find the approximate age of the universe
- 4. Scientists first discovered the radiation coming from the universe in nineteen _____ four
- 5. The leading theory o the formation of the universe