vocab

3. the four giant outer planets of our solar system
5. system for detecting the presence
8. Jupiter's four largest moons
13. Ishtar Terra is the second largest of the three continental terrae regions on the planet Venus
14. Saturn's largest moon
15. astronomical rings around planets
16. the smaller, outermost moon of Mars
18. Neptune's largest moon

1. the inner four planets of our solar system
2. the largest canyon system in the Solar System, a massive rift on Mars
4. the largest volcano and tallest mountain in the solar system, located on Mars
6. the minimum distance at which a celestial body held together by its own gravity
7. the process where a molecule breaks apart (dissociates) after absorbing light energy (a photon), leading to the cleavage of chemical bonds, forming smaller fragments like atoms or radicals
9. narrow, fast-flowing air currents in the upper atmosphere
10. the planet's largest impact basin and one of the largest recognized basins in the Solar System.
11. Jupiter's largest moon
12. Steep slope or cliff
17. the inner, larger moon of Mars