Across
- 1. hot flowing matter that is made up of charged particles
- 2. the shadow of someone close to light
- 4. are a force that attracts object to the hole
- 7. a person who is an expert of physics
- 9. a system that is made up of gas,stars,and dust
- 10. a substance that contains mass and volume that's takes up space
- 11. a fact or thing that is unusual
- 12. is a force that is invisible and pulls us down
Down
- 1. light vibrating in only one direction.
- 3. planets orbiting the sun
- 5. the distance that light travels in a year
- 6. a person who studies planets and other space with a telescope
- 8. the boundary of a black hole where objects get trapped in forever