Across
- 3. The force that attracts a body toward the center of any object with mass
- 5. Ring of comets beyond the orbit of Neptune
- 7. A spherical envelope surrounding our solar system that lies beyond the orbit of Pluto
- 10. The tail of dust particles that streams from a comet as it comes closer to the sun
Down
- 1. A rock in space
- 2. A trail of particles behind a comet that is swept away by solar wind
- 4. The frozen part of a comet that is made of ice and dust
- 6. wind A constant outward flow of particles from the Sun
- 8. An icy rock in space
- 9. Elliptic path of an object in space that is affected by gravity