Across
- 3. unit of measurement used to find distances between the Sun and a planet in its orbit
- 5. a large, gaseous planet that does not have a solid rocky surface
- 7. dark, relatively smooth plains, which average 3 km lower in elevation
- 9. the time it takes for a planetary body to make one orbit around another, larger body
- 10. the time it takes for a planetary body to spin around on its axis once
Down
- 1. a small, icy body that has an eccentric orbit around the Sun
- 2. an oval shape that is centered on two points instead of a single point, as in a circle
- 4. one of the four inner planets with solid, rocky surfaces
- 6. heavily cratered region of the Moon that is light in color and mountainous
- 8. metallic or silicate-rich object that orbits the Sun in between Mars and Jupiter