Region of overdensity of galaxies within the local supercluster
Panoramic view of the entire near-infrared sky. The location of the Great Attractor is shown following the long blue arrow at bottom right.Hubble Space Telescope image of the region of the sky where the Great Attractor is located
The Great Attractor is a region of gravitational attraction in intergalactic space and the apparent central gravitational point of the Laniakea Supercluster of galaxies that includes the Milky Way galaxy, as well as about 100,000 other galaxies.
The observed attraction suggests a localized concentration of mass having the order of 1016 solar masses.[1] However, it is obscured by the Milky Way's galactic plane, lying behind the Zone of Avoidance (ZOA), so that in visible light wavelengths, the Great Attractor is difficult to observe directly.[2]
The attraction is observable by its effect on the motion of galaxies and their associated clusters over a region of hundreds of millions of light-years across the universe. These galaxies are observable above and below the Zone of Avoidance; all are redshifted in accordance with the Hubble flow, indicating that they are receding relative to the Milky Way and to each other, but the variations in their redshifts are large enough and regular enough to reveal that they are slightly drawn towards the attraction. The variations in their redshifts are known as peculiar velocities, and cover a range from about +700 km/s to −700 km/s, depending on the angular deviation from the direction to the Great Attractor.
The Great Attractor itself is moving towards the Shapley Supercluster.[2]
^Cite error: The named reference BehindMilkyWay was invoked but never defined (see the help page).
^ ab"What is the Great Attractor?". Universe Today. 14 July 2014. Retrieved 24 June 2018.
beyond the GreatAttractor, and which is called the Shapley Attractor. The proposed Laniakea Supercluster is defined as the GreatAttractor's basin. It...
The Shapley attractor is an attractor located about the Shapley Supercluster. It is opposed to the Dipole Repeller, in the CMB dipole of local galactic...
part in which the Milky Way resides. Hydra–Centaurus Supercluster the GreatAttractor, Laniakea's central gravitational point near Norma Antlia Wall, known...
Region of outer space GreatAttractor – Region of overdensity of galaxies within the local supercluster Hercules–Corona Borealis Great Wall – Largest known...
our local universe GreatAttractor – Region of overdensity of galaxies within the local supercluster Shapley Attractor – Attractor in the Shapley supercluster...
motion—the GreatAttractor may be another—and has led to a surge of interest in this supercluster. It has been found that the GreatAttractor and all the...
the Coma Cluster. A very large aggregation of galaxies known as the GreatAttractor, dominated by the Norma Cluster, is massive enough to affect the local...
3627) is a rich cluster of galaxies located near the center of the GreatAttractor; it is about 68 Mpc (222 Mly) distant. Although it is both nearby and...
galaxy dynamics and large-scale motions in the Universe, including the GreatAttractor. Somak Raychaudhury was born in Kolkata (then Calcutta), India. He...
direction of the GreatAttractor, which is a gravitational mystery originally discovered in 1973. However, the source of the GreatAttractor's attraction was...
the Hydra–Centaurus Supercluster, a gravitational anomaly called the GreatAttractor affects the motion of galaxies over a region hundreds of millions of...
include the open cluster NGC 6025 and planetary nebula NGC 5979. The GreatAttractor, the gravitational center of the Laniakea Supercluster which includes...
on "Forget Time". In 2005, he contributed the track "Voyage To The GreatAttractor" to DJ Jonathan Lisle for the second volume in Bedrock's Original Series...
background Earth's inner core Galactic Center Geographical centre of Earth GreatAttractor Illustris project List of places referred to as the Center of the Universe...
the NASA animated short "Robot Astronomy Talk Show: Gravity and the GreatAttractor," part of the web-series IRrelevant Astronomy produced by NASA's Spitzer...
it to support human control. Bolder's mission was simple: go to the GreatAttractor, the cause of most galactic drift, and find out why and how it exists...
it.[citation needed] CfA2 Great Wall Cosmic microwave background Dark flow GreatAttractor List of largest voids Sloan Great Wall South Pole Wall Void...
Amongst others the Virgo cluster, the Norma cluster (including the GreatAttractor), the Coma cluster, the Pisces-Perseus supercluster, the Hydra cluster...
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