galaxy clusters
nounUK /ˈɡæləksi ˈklʌstəz/
US /ˈɡæləksi ˈklʌstərz/
Galaxy clusters are huge groups of many galaxies held together by gravity.
The telescope showed a picture of several galaxy clusters far away in space.
RELATED WORDS
OTHER MEANINGS
2. Large collections of galaxies studied by astronomers to learn about the universe.
Scientists measured the distance between two galaxy clusters.
3. In astronomy, the biggest structures bound by gravity in space.
Galaxy clusters can contain thousands of galaxies.
4. Groups of galaxies that look close together in the night sky.
The map marked where the galaxy clusters appear.