A comet is a lump of rock and ice. Spacecraft have flown by comets. A comet only has a tail when it is near the sun. Most comets come from the Kuiper belt. A comet has actually been witnessed hitting a planet. Most comets have short orbital periods.
A comet is a tiny, frozen entity in the Solar System that heats up and starts to emit gases as it approaches the Sun. This process is known as outgassing. This results in an apparent atmosphere or coma, and occasionally a tail as well. These occurrences are caused by how the solar wind and solar radiation interact with the comet's nucleus.
The size of comet nuclei varies between a few hundred meters and tens of kilometers, and they are made up of loose clumps of ice, dust, and tiny rocky particles. A comet's orbit is typically very eccentric and elliptical, and its orbital period can range from a few years to possibly millions of years.
Learn more about Kuiper Belt here:
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Answer:
B
Explanation:
the San Bushmen were are the oldest inhabitants in Africa and the term San is referred to group of hunter- gatherers
Answer:
The diameter of a circle is the distance from a point on one side of the circle to a point on the other side going through the center. It also is expressed as twice the radius, which is a line measured from the center to any point on the circle.
Explanation:
A bomb cyclone is a winter hurricane
Moose since most live freely and are not feed and maintained by humans