Which of the following statements about comets is not true?
A)Comets are thought to be dirty snowballs.
B)The birthplace of comets is a cloud of icy, dusty aggregates beyond the solar system.
C)Most comets have elliptical orbits with periods around one hundred years.
D)The tail of a comet consists of dust and evaporated ices.

Question

Quizplus · Accepted Answer

While some comets do have elliptical orbits with periods around one hundred years, this statement is not true for most comets. Some comets have much longer or much shorter periods, and some may even have parabolic or hyperbolic orbits that take them out of the solar system entirely.

Which of the Following Statements About Comets Is Not True