Across
- 3. a loose ball of ice and rock that usually has a long, narrow orbit around the sun
- 4. the sun, the planets, and a variety of other objects
- 7. a unit of distance equal to the mean distance from the sun to Earth, or about 150,000,000 km
- 11. a region beyond Neptune’s orbit extending 30 to 50 AU from the sun
- 12. the tendency of an object in motion to resist a change in motion unless acted upon by a force
- 13. a meteoroid that enters Earth’s atmosphere in a streak of light
- 14. the most distant part of our solar system
Down
- 1. an object that orbits the sun and has enough gravity to be round but has not cleared the area of its orbit
- 2. what makes up an object or a material
- 5. an average-sized star, composed of helium and hydrogen, at the center of the solar system
- 6. an area around a star where it is neither too hot nor too cold for liquid water to exist on the surface of the planets within the area
- 8. a small, mostly rocky or metallic body that orbits the sun in the inner solar system
- 9. a natural object, or satellite, that orbits a planet
- 10. object that orbits the sun, has become rounded by its own gravity and has cleared the area of its orbit
- 15. to travel in a curved path around something