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Within a given supercluster, most galaxy motions will be directed inward, toward the center of mass. This gravitational focal point, in the case of Laniakea, is called the Great Attractor, and influences the motions of the Local Group of galaxies, where the Milky Way galaxy resides, and all others throughout the supercluster.
Astronomers have made the most detailed infrared map of our galaxy ever made. The huge map has already helped changed our view of the galaxy in unexpected ways, according to its creators.
The galaxies in the Local Group, the cluster of galaxies which includes the Milky Way and the Andromeda Galaxy, are gravitationally bound to each other. It is expected that between 10 11 (100 billion) and 10 12 (1 trillion) years from now, their orbits will decay and the entire Local Group will merge into one large galaxy. [5] Assuming that dark energy continues to make the universe expand at ...
The Milky Way[ c ] is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.
Virgo Supercluster. The Local Supercluster (LSC or LS) is a formerly defined supercluster containing the Virgo Cluster and Local Group, which itself contains the Milky Way and Andromeda galaxies, as well as others. At least 100 galaxy groups and clusters are located within its diameter of 33 megaparsecs (110 million light-years).
By the 20th century, observations of spiral nebulae revealed that the Milky Way galaxy was one of billions in an expanding universe, [3][4] grouped into clusters and superclusters.
Astronomers used the James Webb Space Telescope to spot a Milky Way-like galaxy that formed soon after the big bang created the universe.
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 10 16 solar ...
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