galacticclusters
nounUK /ɡəˈlæk.tɪk ˈklʌs.təz/
US /ɡəˈlæk.tɪk ˈklʌs.tɚz/
Big groups of galaxies that stay close together in space.
Scientists used a giant telescope to study several galacticclusters far away.
OTHER MEANINGS
2. Large collections of stars and gas held together by gravity.
The galacticclusters glowed brightly in the deep space photo.
3. Groups of galaxies that move together through the universe.
Astronomers mapped how galacticclusters drift over billions of years.
4. Distant space neighborhoods made of many galaxies.
Each of the galacticclusters contains hundreds of galaxies.