The Oort cloud is ________.
A)an unusual type of cloud formed when meteorites strike the earth
B)another name for the inner solar system,just before the Sun became hot enough for nuclear fusion
C)the outer solar system where planetesimals,rocky debris and comets orbit outside beyond the outer planets but cross into the inner solar system at times
D)the asteroid belt

Question

Quizplus · Accepted Answer

The Oort cloud is a region in the outer solar system beyond the outer planets where planetesimals, rocky debris, and comets orbit. It is believed to extend up to halfway to the nearest stars and is the source of long-period comets that come into the inner solar system from time to time.

The Oort Cloud Is ________