Across
- 4. A powerful explosion that occurs when a massive star dies.
- 5. A small icy body that orbits the Sun and has a glowing tail when near it.
- 6. A massive system of stars, planets, gas, and dust held together by gravity.
- 8. The force that attracts objects toward one another, especially towards the center of a planet or star.
- 9. The path one object takes around another in space due to gravity.
- 10. A heavy element formed in the cores of stars and during supernovas.
Down
- 1. A natural satellite that orbits a planet.
- 2. A large object that orbits a star and does not produce its own light.
- 3. A cloud of gas and dust in space, often where new stars are born.
- 7. A small rocky body orbiting the Sun, mostly found in the asteroid belt.