Across
- 4. a round thing orbiting a star that is big enough to be rounded by its own gravity
- 6. is the gravitationally bound planetary system of the Sun
- 10. moon, planet or machine that orbits a planet or star
- 11. is a natural satellite
- 12. is a unit of length used to express astronomical distances
- 13. a small rocky or metallic body in outer space
Down
- 1. a gravitationally bound system of stars, stellar remnants, interstellar gas, dust
- 2. the gravitationally curved trajectory of an object
- 3. a thing that just looks like small dots in our night sky but they are actually huge
- 5. an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases
- 7. a small rocky object that orbits the sun
- 8. are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas
- 9. a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere
- 10. a large blazing ball of fire that provides earth heat and light