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Galaxy cluster Notes Bullet Cluster: In this collision between two clusters of galaxies, the stars pass between each other unhindered, while the hot, diffuse gas experiences friction and is left behind between the clusters. The gas dominates the visible mass budget of the clusters, being several times more massive than all the stars.
Composite image of five galaxies clustered together just 600 million years after the Universe's birth [1]. A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, [1] with typical masses ranging from 10 14 to 10 15 solar masses.
The pair of galaxies were found lensed by galaxy cluster CL1358+62 (z=0.33). This was the first time since 1964 that something other than a quasar held the record for being the most distant object in the universe.
NASA has captured what it looks like when two galaxies collide. The image is of Arp 299, about 140 million light years away from Earth, and has been merging for millions of years.
Clusters of galaxies are the most recent and most massive objects to have arisen in the hierarchical structure formation of the Universe and the study of clusters tells one about the way galaxies form and evolve. Clusters have two important properties: their masses are large enough to retain any energetic gas ejected from member galaxies and ...
Some scholars, considering the mass, density, and size of the association, have speculated that Cygnus OB2 is an example of a globular cluster in formation: similar objects have been observed both in the Large Magellanic Cloud and in star-forming regions found in other galaxies; it has also been pointed out that this would be the first of this ...
NGC 1700 is an elliptical that formed after the merger of at least two galaxies. The galaxy has boxy isophotes and has two broad tidal tails or plumes extending towards the north-west and south-east of the galaxy for about 165 arcseconds, which corresponds to 41,000 parsecs (130,000 ly) at the distance of the galaxy. There is also visible a ...
These are globular clusters within the halo of the Milky Way galaxy. The diameter is in minutes of arc as seen from Earth. For reference, the J2000 epoch celestial coordinates of the Galactic Center are right ascension 17 h 45 m 40.04 s, declination −29° 00′ 28.1″.