What is the Local Group?
A) A group of about 100 stars within 100 light-years of the Sun,which appears to have been formed in a star cluster at about the same time from similar material
B) The planets Mars,Earth,and Venus,which are similar in physical properties and in orbital positions around the Sun
C) A group of galaxies orbiting around the Andromeda Galaxy M31,all completely separate from the Milky Way
D) A cluster of about 40 galaxies of which the Milky Way is a member

Question

Quizplus · Accepted Answer

The Local Group is a cluster of about 40 galaxies, including the Milky Way, that are relatively close to each other and gravitationally bound together. Option A describes a star cluster, option B describes a group of planets, and option C describes a satellite group orbiting around a single dominant galaxy.

What Is the Local Group