Pieces of comet fall several times a year, in each meteor shower.
Comets appear when they do; they don't run on a schedule. Hundreds of amateur comet hunters are watching the skies every day. In fact, several new comets have been seen this year; unfortunately, those comets have fallen into the Sun.
"Down" is the direction of the greatest mass, which, in the Solar System, is the Sun. The reason ALL comets haven't fallen into the Sun is that there also have angular momentum, which results in them falling AROUND the Sun.
They get a different kind of gravity that far away from the sun. They can also get meteor pieces that have fallen of comets that we can not get, because we get too much of the sun's gravity.
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.