They seem to be bits left over from the formation of the Solar System about 4.5 billion years ago.
they were formed the same time as the planets (after our sun)
Comets are Comets and Asteroids are Asteroids
how are comets classfied
Comets!
Comets have chemicals and gases.
All the comets that have been seen in history were in the solar system and most still are.
David A. Seargent has written: 'Comets' -- subject(s): Comets 'The greatest comets in history' 'Planet Earth and the design hypothesis' -- subject(s): Intelligent design (Teleology)
they were formed the same time as the planets (after our sun)
Comets are Comets and Asteroids are Asteroids
Bill Haley and the Comets rocked around the clock in 1955. And the rest... is history!
comets
Comets
how are comets classfied
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
The singular form is comet, the plural form is comets, the possessive plural is comets'. Example: The comets' paths will not cross.
Comets.