Across
- 4. The time it takes an object in space to spin a full rotation on its axis
- 5. The time it takes an object in space to travel once around the Sun
- 9. The average distance from Earth to the Sun
- 11. a meteoroid that strikes a planet, moon, or any other space object by the impact of a meteorite
- 12. This is made of gas, dust, and ice and orbits around the sun in an oval shape
Down
- 1. a small rocky particle that moves through space
- 2. Inner,rocky planets
- 3. a streak of light in Earth's atmosphere made by meteoroid streaking through our atmosphere
- 6. This happens when a planet's atmosphere traps solar energy and causes the surface temperature to increase
- 7. A round depression formed on the surface of a planet, moon, or other space object by the impact of a meteorite
- 8. The four largest of Jupiter, Io, Europa, Ganymede, Callisto
- 10. Millons of small, rocky, objects that orbit the sun in a belt of themselves between the orbits of Mars and Jupiter