This is because it is made of ice and is smaller than most planets:)
by its shiny blue trail.
Large back legs act as catapults to allow grasshoppers to jump.
Ceres is smaller than any planet; even smaller than Pluto.
sunlight
earth's gravity
Solar wind makes a comet's tail always point away from the Sun.
nothing
The gases in the atmosphere
Halley's comet appears because it is a comet that orbits the Sun. It as a highly elliptical (oval) orbit which makes it seem to fly out of the solar system and back.
The sun makes a comet appear bright. A comet is usually made up of ice and rock. The ice reflects the light of the sun very well.
Pluto makes a complete orbit around the sun every 248.09 years.
It's smaller and colder