- Most comets move in unusual, elongated orbits:
- At least one is know to orbit between the planets.
- More typically, a swarm oribts the sun beyond Neptune and Pluto.
- "New" comets appear when members of this swarm have their orbits disturbed.
- This may occur by a passing star.
- They drop into the inner solar system.
- Their ices turn into gas.
- The most famous comet is Halley's Comet.
- Many others are known as well.
- Chiron may be one such comet thrown from the swarm of the cold, remote edge of the Solar System.
- For more information, visit these comets: