What are galaxy clusters?
Q: What are galaxy clusters?
A: Galaxy clusters are large collections of galaxies bound together by gravity.
Q: How many galaxies are there in a typical galaxy cluster?
A: Typical galaxy clusters consist of hundreds of galaxies and galaxy groups.
Q: How do galaxy clusters compare to galaxy groups?
A: Galaxy clusters are much larger than galaxy groups, like our Local Group.
Q: What is the Virgo Cluster?
A: The Virgo Cluster is a notable galaxy cluster, which includes our Local Group.
Q: What is the Great Attractor?
A: The Great Attractor is a very large aggregation of galaxies dominated by the Norma Cluster, which is massive enough to affect the local expansion of the universe.
Q: What is SPT-CL J0546-5345?
A: SPT-CL J0546-5345 is the most massive galaxy cluster ever found in the early universe.
Q: What is the difference between galaxy clusters and globular clusters?
A: Galaxy clusters are large collections of galaxies, while globular clusters usually orbit galaxies.
