Across
- 2. A massive system of stars, planets, and cosmic dust bound together by gravity.
- 5. An object that orbits a planet, either natural or man-made.
- 7. A small icy body that releases gas and dust, forming a glowing tail as it approaches the sun.
- 8. The curved path of an object as it moves around a star, planet, or moon.
Down
- 1. The distance light travels in one year.
- 3. A small rocky body orbiting the sun, mainly found in the asteroid belt.
- 4. A celestial body orbiting a star, like Earth or Mars.
- 6. A small rock from space that burns up upon entering Earth's atmosphere.