Across
- 2. Bright big balls that contain hydrogen and helium.
- 5. interstellar gas is held together by gravity to hold planets, stars, and moons. Wavelengths
- 6. Meaning the international space station, it is the biggest space organization in the world
- 8. An object that can make distant things look bigger.
- 9. The curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic elliptical revolution.
Down
- 1. it is a build-up of gases leaving earth but entering space.
- 3. it is where the moon and planets are located.
- 4. A region of space having a gravitational field so intense that no matter or radiation can escape.
- 7. The smallest planet in our solar system