No. A comet is surrounded by various vaporized ices, but not hydrogen.
yes sometimes
i din't think so but sometimes comets are
The heart, or center of a comet is called the nucleus. The nucleus is made of a solid piece of ice surrounded by a cloud of particles and gases.
A hazy Cloud called coma sorrounds the head of a comet.
The "coma".
It is the Oort cloud
No. Haley's Comet never gets properly out of the solar system, while the Oort Cloud is far outside the orbit of Neptune.
well, it may be an Oort Cloud Object. because Oort cloud is the outermost part of the solar system. :) "A comet" is the simple answer.
Basically nitrogen and hydrogen.
no
The Oort Cloud of comets.
smelly gas