Comets, also known as dirty snowballs, are like small member of our Solar System. They travel around the sun in an oval shaped
path, but it can take from about 7 years to 1 million years for comets to go around the sun. Comets are are a combination
of ice and dust. One comet is made up of about 75% gas and water (ice), and the other 25% is made up of chunks of
Comets are predicted to be the remains of
the formation of our solar system. A huge cloud of comets, known as the Oort comet cloud, surround the sun in a spherical
shell that begins just outside the orbit of Pluto. The comets get no heat from the sun and in result they remain cold and
solid all the time. When they do come close to the sun, the ice melts and the comets develop a tail.
Besides the tail, comets are made up of several
other different parts that include: the nucleus, coma, dust, and ion tail. The nucleus is the middle part of the comet that
is made up of ice and gas. The coma is the head of the comet that has carbon dioxide and other neutral gases in it. Lastly,
the ion tail is made up of plasma and the dust tail has smoke-sized dust particles.
Comets are extraordinary objects and gorgeous
things to see. We have been fortunate to peer at some comets and the most famous one is Haley's Comet. Haley's comet was last
seen in the summer of 1994. (dust).