Q
What is the Local Group?
A
Expert Answer
The Local Group is our galaxy cluster—about 54 galaxies including the Milky Way, Andromeda, and Triangulum, spanning ~10 million light-years. Gravity binds these galaxies together, though dark energy causes the Local Group as a whole to recede from more distant structures.
Key Insight
The Local Group is our galaxy cluster—about 54 galaxies including the Milky Way, Andromeda, and Triangulum, spanning ~10 million light-years.
Topics