What kind of orbit do comets follow

Comets orbit the sun, but most are believed to inhabit in an area known as the Oort Cloud, far beyond the orbit of Pluto. Occasionally a comet streaks through the inner solar system; some do so regularly, some only once every few centuries.

A single year lasts only 88 days on Mercury, but thanks again to its slow rotation, a day lasts twice as long! That means that if you could stand on the surface of Mercury, it would take a staggering Earth days for the Sun to rise, set and rise again to the same place in the sky just once!

The Beginning of a Comet A comet begins when something pushes it away from its starting point and into the wideness of space. Usually, a comet gets pulled into space by a star traveling past or a planet that is nearby. These particles and gases make a cloud around the nucleus, called a coma.

There are two categories of comet, based on the amount of time they take to orbit the Sun. Short-period comets take less than years, and long-period comets take over years, with some taking , to 1 million years to orbit the Sun. Comets are sorted into four categories: periodic comets e.

As a rule of thumb, comets are about 10 km in diameter. Halley is about 16 x 8 x 8 km; Hale-Bopp was one of the biggest comets every seen, with a diameter twice that of Halley.

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