Physics, 17.12.2020 23:40 22haydeabiy

What differentiates galaxy groups from clusters? A.
Clusters are bigger than groups.
B.
Clusters are more massive than groups.
C.
Clusters contain a hot intracluster medium, whereas groups do not.
D.
Clusters are collections of galaxy groups, whereas groups are collections of galaxies.
E.
Clusters don't gravitationally bind galaxies together, while groups bind galaxies gravitationally.

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What differentiates galaxy groups from clusters? A.
Clusters are bigger than groups.
B...