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Explanation: Here is one of the largest objects that anyone will ever see on the sky. Each of the fuzzy blobs in the above picture is a galaxy, together making up the Perseus Cluster, one of the closest clusters of galaxies. We view the cluster through the foreground of faint stars in our own Milky Way galaxy. It takes light roughly 300 million years to get here from there, so we only see this cluster as it existed during the age of the dinosaurs. Also known as Abell 426, the center of Perseus cluster is a prodigious source of X-ray radiation, and so helps us study how clusters formed and how gas and dark matter interact. The Perseus Cluster of Galaxies is part of the Pisces-Perseus supercluster of galaxies, which spans over 15 degrees and contains over 1000 galaxies.
Latest Comet Hyakutake images:
APOD Hyakutake Archive,
JPL,
Fayetteville
Observer-Times,
NASA's Night of
the Comet,
ICSTARS,
Jerry Lodriguss,
ScienceWeb,
Crni Vrh Obs.,
Cent. Mich. U.
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NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: cluster of galaxies - Perseus cluster
Publications with words: cluster of galaxies - Perseus cluster
See also: