Chapters 7 - 8 Vocabulary

5. A huge explosion that can generate more light than all the other stars in the galaxy combined.
6. A ______ planet is an object that orbits the Sun and is beg enough to be round, but doesn't clear the neighborhood of objects near its orbit.
8. Even though it is smaller than Earth's moon, it has its own satellites: Charon, Nix, and Hydra.
10. The ______ Belt is populated by millions of small icy bodies beyond the orbit of Neptune.
11. This plant's most dramatic feature is its ring system.
13. We measure huge distances in ______ units (AU).
15. This planet has two moons, Phobos and Deimos.
16. This plant's main feature is the Great Red Spot, a giant storm as wide as three Earths.
20. A cloud of gas and dust in space between stars.

1. This planet's atmosphere is dense and consists mostly of carbon, making it one of the hottest places in the solar system.
2. The closest planet to the sun.
3. Everything that exists in the observable universe.
4. Moons are examples of natural ______.
7. The ______ belt is like a boundary between the terrestrial planets and the gas giant planets.
9. One ______ year is the distance light travels in 365 Earth days.
12. An enormous collection of tens of millions to hundreds of billions of stars, interstellar gas, and dust.
14. Winds on this planet travel at speeds of more than 2,000 km per hour.
17. This planet appears blue because of the methane gas in its atmosphere.
18. The big bang ______ suggests that there was one explosion from which clusters of galaxies formed and can now be seen moving apart from one another.
19. This planet has an atmosphere of nitrogen and oxygen, and has liquid water.