Comets are small Solar System bodies that flow all around the sun, and almost everywhere out of the Solar System. Their origin cannot be confirmed, but theory that says the following:"Comets are small "space wastes" made of space dust that is leftover from building of a planet or any other bigger space body." is accepted in schools and is considered the one we should all stick to.
Short-period comets originate from the Kuiper Belt.
Comets have two main sources, the Oort Cloud or the Kuiper Belt
Yes
True/yes
Long period comets originate in the Oort Cloud.
-- Despite where they come from, some comets have different mass qualities. While some are long-term comets, some are short-term. Short-term period comets originate in the Kuiper belt or it's "shattered disc", which is around the orbit of Neptune. Long-term period comets originate in Oort cloud, which is a cloud of icy bodies in space.
The Oort cloud.
It has been suggested that comets originate in the Oort cloud and then travel in long elliptical orbits around the Sun.
The Oort cloud.
The Oort cloud.
Long period comets originate in the Oort Cloud.
Short period comets are thought to originate in the Kuiper Belt, outside the orbit of Neptune.Long period comets originate in the Oort Cloud, which is far more distant, about half way to the nearest star!Comets, as with any astronomical body, can have its orbit perturbed (changed) by external gravitational forces. Long period comets can become short period and vice versa. The orbits can range from a few tens of years to many thousands, some can even escape altogether.