Across
- 2. stars and hot gas
- 3. using the sun as a reference point
- 4. a force of attraction between objects due to their masses
- 8. when gravity is pulling it down and no other forces act on it
- 9. a celestial body that is composed of gas and emits light
- 10. He stated the sun remains stationary and the planets orbit it
Down
- 1. 8 planets that orbit the sun, a dwarf planet and ceres
- 5. an object in motion stays in motion
- 6. when the planets are farthest from the sun and orbit slowly
- 7. I am so massive I collapse on myself