Across
- 3. If any planet were to move ________, they would get pulled into the sun.
- 5. the universe is still __________ today
- 8. gravity and _________ inertia are responsible for the path of planet's orbits.
- 9. the force that pulls objects towards each other
- 10. Our solar system is located on a __________ of the Milky Way.
Down
- 1. the model of the solar system with the sun in the middle is called _____________.
- 2. the model of the universe with the Earth in the middle is called ____________.
- 4. the tendency of an object to resist a change in motion
- 6. before the Big Bang all contents of the universe were condensed into one tiny ________________.
- 7. If any planet were to go ________, they would escape the sun's gravity and leave our solar system.