It rather depends on the path of the comet. Some comets (such as Encke's comet) return in as little as 20 years - others might not return to our solar system for centuries (Comet McNaught has an orbital period of over 92,000 years !) It's possible to see at least one comet per year if the weather conditions ar favourable.
They can be old, but not that old. If a comet was from the asteroid belt, it would take a few years for it to get here. It could have been created a VERY long time ago though.
old as the universe its self.
From the earth we see comets as shooting stars, because theres a tail to it.
TELESCOPE
no
because god sent them for us to see. hail almighty god.
Typically, several comets are spotted every year.
There is no set number, because new comets are discovered all the time. Not all comets that are discovered will be visible with the naked eye.
From the earth we see comets as shooting stars, because theres a tail to it.
they have long elliptical orbits
they tend to move past in routines orbiting our solar system or our galaxy in about 70 years
TELESCOPE
See related link for a list of periodic and non periodic comets.
no
when your balls drop
Short period comets have a period of less than 200 years Long period comets have a period of more than 200 years.
long period comet
short period comets
Comets have been around for the past four and a half billion years.