2.  The region past Neptune's orbit it has millions of icy rocks called comets.  Bigger objects in this belt are called Kuiper Belt objects.  The belt is shaped like a plate.

3.  rocks or metal that orbits the sun  Most are in the asteroid belt between the orbits of Mars and Jupiter

4.  a body of ice and dust that travels in a long narrow orbit around the sun  In the night sky it looks like a star with a tail  The Halley's comet has been spotted every 76 years since 1758.

5.  A hollow area or pit in the ground  Caused by a meteorite

6.  Also known as a shooting star  Rust or dust particles falling to Earth  They heat up and burn due to friction with air on the way down  most never reach the ground

7.  The planets, moon, asteroids and comets orbit or move around the sun in a circular motion.

8.  Planets revolve around a star like our Sun  Earth is the 3 rd planet in our Solar System

9.  Small, round bodies orbiting the sun (smaller than the 8 planets)  Dwarf planet Pluto is a Planetoid From Glencoe Physical Science The asteroid Ida is an irregularly shaped and heavily cratered planetoid

10.  When a planet spins around his axis  It takes 24 hours for Earth to complete one rotation  Neptune completes one rotation in 16 Earth hours. NeptuneEarth

11.  An object that orbits celestial bodies is called a satellite  Anything that travels in a circle  Can also be man made Sputnik I was the first man-made satellite to orbit the Earth.

12.  Vast emptiness that lies beyond Earth’s atmosphere  Where Earth, the Moon, the sun, the planets, and stars are all located  No air in space

13.  an instrument used to observe objects in space  The Hubble Space Telescope is a telescope that revolves around Earth.

14.  small pieces of rock drift away from the asteroid belt and move in different directions.

15.  When a meteoroid moving away from the asteroid belt hits Earth's surface, it is called a meteorite.  This causes a crater