No. The head of a comet is much, much smaller than Earth (and made of considerably less dense materials as well); a comet knocking Earth out of the solar system would be like a mosquito knocking your car off the highway.
A comet is in a solar system. A solar system is in a galaxy, so technically a comet is also in a galaxy.
well, there are over 5 comets that have crossed the lines to the earth's orbit to the sun. So the Haley's comet must have crossed the solar system a thousand times.
Any comet visible from earth is in orbit around the sun. If the orbit is closed (elliptical), the comet will return after some period of time. If the orbit is open (parabolic or hyperbolic), the comet will escape the solar system and never return to the neighborhood.
Comets have their own orbits in our solar system around the sun. They don't come close to the earth.
76-79
Yes. Halley's Comet is a comet that orbits our sun, and the definition of "Part of the solar system" is 'Any object that orbits our sun.'
Comet
The solar system
A comet.
Comet
Yes. In fact, with the extremely rare exception of a "rogue" comet, all comets are a part of our solar system.
Halley's comet does not circle the Earth, it orbits the Sun. It will enter the inner solar system again in mid-2061. (It passes through every 75-76 years.)