John Ruiz 10/24/23

2. space rocks and chunks of space metal that land on Earth
3. an interaction between a planet, such as Earth, and streams of debris from a comet.
4. the distance between the Earth and the Sun.
5. a place between the rocky planets and the gas planets
7. a large planet mostly composed of helium and/or hydrogen
9. Small chunks of rock that travel through space
11. one of numerous small solid heavenly bodies which may have existed at an early stage of the development of the solar system and from which the planets may have been formed.
12. Hydrogen becomes a liquid at very low temperature and high pressure.
14. the celestial bodies that are too tiny to be classified as planets but too huge to be classified as stars.
15. a line of cliffs formed by the faulting or fracturing of the earth's crust
17. a small chunk of dust and ice that orbits, or travels around, the sun.
18. the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets

1. at the planet's opposition which is when it is exactly opposite the Sun.
6. the four innermost planets in the solar system.
8. the orbit of each planet in the Solar System is approximately an ellipse with the Sun at one focus point
10. a ring of icy bodies just outside of Neptune's orbit.
13. Small chunks of rock that travel through space
16. a measure of how non-circular the orbit of a body is.