Comets are composed of ice and dusty and are present in space. There are over 5 thousand different known comets.
online (type in "comet info" at www.google.com)
The singular form is comet, the plural form is comets, the possessive plural is comets'. Example: The comets' paths will not cross.
Comets are Comets and Asteroids are Asteroids
comets
Comets
There are no comets on Neptune because Neptune is a planet and comets are, well, comets. They have nothing to do with each other.
comets crash into all planets!Planets don't have comets. Planets have moons. Comets orbit the sun
Yes Comets are Rocks
Comets move
Comets.
Comets!
Much about what we think we know about comets is, at best, educated guesswork. We have sampled the tails of three comets, and all were different. We observed an impact into the nucleus of one comet. We believe that comets have a source in the "Oort Cloud", but no instrument currently exists that is sensitive enough to detect the Oort Cloud - so we have NO EVIDENCE that the "Oort Cloud" exists. It makes "sense"; comets have to come from SOMEPLACE, since no comet could have survived 4.5 billion years of close passes by the Sun. But the fact is that what we know about comets is like a bucket, and what we do NOT know about comets is like an ocean. And over the next 300 years, I predict that we will discover that at least half of what we "know" about comets will turn out to have been wrong.