When do comets generally begin to form a tail?
A)inside Mercury's orbit
B)between Mercury and Earth's orbit
C)beyond Jupiter's orbit
D)inside of Jupiter's orbit
E)They always have a tail (until they run out of material).

Question

Quizplus · Accepted Answer

Comets generally begin to form a tail inside of Jupiter's orbit, where the Sun's radiation is strong enough to sublimate the comet's ices into gas, which then gets blown away by the solar wind, creating a tail.

When Do Comets Generally Begin to Form a Tail