Map of the Universe

Perseus Cluster

Galaxy cluster · Galaxy cluster in the constellation Perseus

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Perseus Cluster
Picture: NASA/CXC/IoA/A.Fabian et al., Public domain, via Wikimedia Commons.

About the Perseus Cluster

The light we see from it set out 0.255 billion years ago, when the universe was 13.5 billion years old (redshift 0.0179).

The map lists it as a galaxy cluster and shows it at the scale of the large-scale universe, drawn on the supergalactic plane.

Its distance or nature is debated, and the map shows one published value.

The brightest X-ray cluster in the sky. Distance 73.6 Mpc (redshift-independent mean) or 79 Mpc (Hubble flow).

Key numbers

Distance (comoving, today)0.258 billion light-years (79 Mpc)
Redshift z0.0179
Light travel time0.255 billion years
Universe's age when this light left13.5 billion years
Distance methodredshift (Planck 2018 cosmology)
Supergalactic coordinatesSGL 347.9°, SGB -14.3°

Where it is

Its place in the universe, from the inside out: Observable universe.

Zoom out to see it in context: Nearby superclusters, a view about 2.3 billion light-years across.

From Wikipedia

The Perseus Cluster is a cluster of galaxies in the constellation Perseus. It has a recession speed of 5,366 km/s and a diameter of 863′. It is one of the most massive objects in the known universe, containing thousands of galaxies immersed in a vast cloud of multimillion-degree gas.

Excerpt from the Wikipedia article Perseus Cluster, licensed CC BY-SA 4.0.

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