Across
- 3. An object that orbits a star, is large enough to have become rounded by its own gravity, and is large enough to dominate or impact those within its orbit.
- 6. Planets composed made mostly of rocks and metals, have solid surfaces, with atmospheres that range from very thick (on Venus) to very thin (on Mercury); the four smaller inner planets in the solar system-Mercury, Venus, Earth, and Mars.
- 8. A meteoroid that impacts or reaches the Earth's surface without burning up completely.
- 9. A celestial object consisting of a nucleus of ice, rock and dust; when near the sun, a "tail" of gas and dust particles form pointing away from the sun.
Down
- 1. A naturally occurring physical entity, association, or structure that exists outside of Earth's atmosphere that can be found in the observable universe; i.e. planets, moon, stars, asteroids, comets, etc.
- 2. A large planet that consists mostly of gases hydrogen and helium in a dense form; the four large outer planets in the solar system- Jupiter, Saturn, Uranus, and Neptune.
- 4. Any of numerous small solid celestial bodies composed of rock and metal that move around the Sun (mainly between the orbits of Mars and Jupiter).
- 5. The remnants of a comet, asteroid or planet that has broken free and is floating around at extremely high speeds in space.
- 7. A meteoroid that has entered Earth's atmosphere and produces a streak of light in the sky as it burns.