galaxy cluster
Gravitationally bound galaxies
A galaxy cluster is a gravitationally bound collection of hundreds to thousands of galaxies, along with hot gas and dark matter.
These are among the largest known structures in the universe, spanning millions of light-years.
The Virgo Cluster is the nearest major galaxy cluster to our own Local Group.
Largest gravitationally bound structures
- filamentVery thin thread
- voidWithout legal effect
- haloLuminous ring overhead
- mergerCorporate combination
accretion · dynamics · equilibrium · core · outskirts
Wavelength stretch from recession
Unit measuring galactic distances
- light-yearsUnits of astronomical distance
- immensityLimitless extent or magnitude
- vastnessState of being immense
- enormousExtremely large in scale
massive · colossal · astronomical · cosmic scale · distance · span
Sanskrit word for moon
- HubbleRenowned astronomer's surname
- telescopeInstrument magnifying faraway objects
- observatoryFacility for celestial study
- spectroscopyStudy of light-matter interaction
luminosity · deep field · survey · infrared · catalog
Luminous ring overhead
- gravitational lensingMass distorting light's path
- dark energyForce accelerating universal expansion
- mass distributionWidespread item dispersal
supercluster
Largest gravitationally bound structures
merger · accretion · dynamics · equilibrium · core · outskirts
redshift
Wavelength stretch from recession
megaparsec
Unit measuring galactic distances
- light-yearsUnits of astronomical distance
- immensityLimitless extent or magnitude
- vastnessState of being immense
enormous · massive · colossal · astronomical · cosmic scale · distance · span
Chandra
Sanskrit word for moon
- HubbleRenowned astronomer's surname
- telescopeInstrument magnifying faraway objects
- observatoryFacility for celestial study
spectroscopy · luminosity · deep field · survey · infrared · catalog
halo
Luminous ring overhead
- gravitational lensingMass distorting light's path
- dark energyForce accelerating universal expansion
- mass distributionWidespread item dispersal
- spacespace, sun, moon, stars, star
- space objectsnebula, planet, star, asteroid, comet
- clustersclump, Pleiades, star system
- GalaxiesMilky Way, Andromeda, spirals, ellipticals, dwarfs
- Deep-Sky ObjectsOrion Nebula, Crab Nebula, Horsehead Nebula, nebula, planetary nebula
- cosmic structuresupercluster, filament, void, sheet, wall
galaxy clusterasteroid
Sun-orbiting rocky mass
planet · star system · moon · solar system · comet
cluster, galaxy, clusters, galaxies, quasar, intergalactic, extragalactic