Across
- 3. A chunk of ice and dust or rock that have stretched-out orbits around the sun
- 5. The bright shiny disk of sun that we can see from earth; most of the light that reaches the Earth comes from this layer
- 10. A mixture of gases that surrounds a planet, moon, or other celestial body
- 11. The arrangement of parts
- 14. A huge ball of very hot matter that gives off energy
- 15. A trait that can help identify something
Down
- 1. The measure of how fast the particles of matter are moving
- 2. The four planets closest to the Sun—Mercury, Venus, Earth, and Mars
- 4. The four planets farthest from the Sun that are made of ice and gases: Jupiter, Saturn, Uranus, Neptune
- 6. The outer most layer of the sun's atmosphere; can only be seen during a total solar eclipse or with a special instrument
- 7. A chunk of rock in space that orbits the sun
- 8. A large, round piece of rock and ice that revolves around a planet
- 9. Clearly visible or understood; obvious; the way something looks
- 12. The layer of the sun that appears bright red in color; can only be seen during a total solar eclipse because its light is normally blocked by the much brighter photosphere
- 13. The curved path of an object around a star, a planet, or a moon
- 14. The planets, asteroids, and comets that orbit the sun, as well as the planets' moons