(gravity anomaly at the center of our supercluster)
The Great Attractor is a spot in space on the order of 250 million
light-years away, apparently with the mass of many thousand
galaxies. It is the location to which Laniakea Supercluster,
our local supercluster is apparently drawing its
galaxies (a large scale streaming motion toward that point),
evident from redshift surveys that indicate
galaxy peculiar velocities ranging from -700km/s to +700 km/s.
The location is obscured by the zone of avoidance, limiting our knowledge
of what is there, but there is a recent report of a supercluster
in that direction (Vela Supercluster), that is further than the
distance cited for the Great Attractor but would produce some
of the noted peculiar velocity distribution.
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Referenced by pages:
supergalactic coordinate system