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.
comet 99947 (zorton 47) is coming in 2016
Comets have a stream of gas and dust coming off them.
The next notable comet scheduled to pass by Earth is Comet Leonard, which is expected to be visible in December 2021. It will be the brightest comet of the year and should be observable with binoculars or a small telescope from dark sky locations. Keep an eye out for updates from astronomers as the date approaches for the best viewing opportunities.
2012
Smurfs - 1981 The Comet Is Coming 5-15 was released on: USA: 19 October 1985
No, there is no comet coming near Earth in 2012. All of the 2012 stuff is just a hoax.
Isaac Newton
yes on november 8,2011
Halley's Comet is following its long orbital path. It is currently a little past the orbit of Neptune, and is not visible.
Yes, it is coming some day. Maybe now or maybe million years from now. Better not to know when its coming.
Solar wind - i.e., particles coming from the Sun.
I could see the comet in the sky coming toward me as it passes the milky way.