Across
- 4. 13.8 million years old (1)
- 7. Universe includes ALL _____ & space that exists(1)
- 9. Theory that states the universe was created from an explosion or rapid expansion (8)
- 10. Our galaxy
Down
- 1. Our planetary system
- 2. the universe there is a very low energy radiating in every direction. This is called cosmic background ______________ (17)
- 3. Distance light travels in one year (6)
- 5. galaxies are moving _____ from Earth (16)
- 6. Cluster of stars, dust, gas & matter (2)
- 8. universe is mostly made of hydrogen and _____ (12)