Galaxy formation and evolution
hideThe study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies. It is one of the most active research areas in astrophysics.
Galaxy formation is believed to occur, from structure formation theories, as a result of tiny quantum fluctuations in the aftermath of the Big Bang. It is widely accepted that galaxy evolution occurs within the framework of a Λ Cold Dark Matter cosmology; that is to say that clustering and merging is how galaxies gain in mass, and can also determine their shape and structure.
For more information about Galaxy formation and evolution, read the full article at
Wikipedia.
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News tagged with galaxy formation
'Cosmic fruit machine' matches collisions
Nov 24, 2009 |
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(PhysOrg.com) -- A new website will give everyone the chance to contribute to science by playing a 'cosmic fruit machine' and compare images of colliding galaxies with millions of simulated images of galactic ...
Maps Unveil the Source of Starburst Galaxy's Winds
Nov 18, 2009 |
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(PhysOrg.com) -- A research group at Kyoto University has discovered that shocks are the primary energy sources that excite the galactic wind region of starburst galaxy NGC 253. Their images of the center ...
Is the Milky Way doomed to be destroyed by galactic bombardment? Probably not
Aug 31, 2009 |
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(PhysOrg.com) -- As scientists attempt to learn more about how galaxies evolve, an open question has been whether collisions with our dwarf galactic neighbors will one day tear apart the disk of the Milky ...
Intense heat killed the Universe's would-be galaxies, researchers say
Jul 01, 2009 |
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(PhysOrg.com) -- Our Milky Way galaxy only survived because it was already immersed in a large clump of dark matter which trapped gases inside it, scientists led by Durham University's Institute for Computational ...
Discovery poses challenge to galaxy formation theories
Apr 10, 2009 |
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A team led by an Indiana University astronomer has found a sample of massive galaxies with properties that suggest that they may have formed relatively recently. This would run counter to the widely-held belief ...
New stars from old gas surprise astronomers
Feb 18, 2009 |
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(PhysOrg.com) -- Evidence of star birth within a cloud of primordial gas has given astronomers a glimpse of a previously unknown mode of galaxy formation. The cloud, known as the Leo Ring, appears to lack ...
Cosmologists 'see' the cosmic dawn
Feb 11, 2009 |
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(PhysOrg.com) -- The images, produced by scientists at Durham University's Institute for Computational Cosmology, show the "Cosmic Dawn" - the formation of the first big galaxies in the Universe.
Astronomers gaze back in time and map the history of the Universe
Dec 23, 2008 |
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(PhysOrg.com) -- UK astronomers are set to expand our knowledge of the history of our Universe with a new project to map the inception and formation of galaxies.
