| They will be studying water, carbon monoxide, ammonia and methanol four of the most abundant gases from comets. |
| Unlike Kuiper belt comets, Oort cloud comets can rain down on the inner solar system from any angle and any direction. |
| Our star system is chock full of asteroids and comets, in every conceivable orbit and location. |
| Both comets and asteroids are the left-over building blocks of the planets in our solar system. |
| It has been suggested that impacts with comets and asteroids provided Earth with much of its water. |
| Most of the larger asteroids and comets are also in stable orbits around the sun. |
