Galaxy formation
Galaxy Formation
Our best articles related to Galaxy formation
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....
The key properties of disk galaxies, which are also commonly called spiral galaxies, is that they are very thin, rotate rapidly, and often show spiral structure. One of the main challenges to galaxy formation is the great number of thin disk galaxies in the local universe. The problem is that...
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After the Big Bang, the universe, for a time, was remarkably homogeneous, as can be observed in the Cosmic Microwave Background or CMB (the fluctuations of which are less than one part in one hundred thousand). There was little-to-no structure ...
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 ...
The key properties of disk galaxies, which are also commonly called spiral galaxies, is that they are very thin, rotate rapidly, and often show spiral structure. One of the main challenges to galaxy formation is the great number of thin ...
dark matter halo is a hypothetical component of a galaxy, which extends beyond the edge of the visible galaxy and dominates the total mass. Since they consist of dark matter, haloes cannot be observed directly, but their existence is inferred ...
globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers. The name ... A succession of distance indicators, which is the distance ladder, is needed for determining distances to other galaxies. The reason is that objects bright enough to be recognized and measured at such distances are so rare that few or none ...
The science goals listed here represent the goals of the most important projects that will be conducted over the next three years with the ATA. Each of these goals is associated with one of the 4 stages of development (see ...
Many bulges have properties more similar to spiral galaxies than elliptical galaxies. They are often referred to as ”pseudobulges” or ”disky-bulges.” It was first discovered that the stars in some bulges orbit around the galaxy like disk stars. These bulges ...
Topics studied by theoretical astronomers include: # stellar dynamics and evolution; # galaxy formation; # large-scale structure of matter in the Universe; # origin of cosmic rays; # general relativity and physical cosmology, including string cosmology and astroparticle physics. Astrophysical ...
Evolutionism refers to the biological concept of evolution, specifically to a widely held 19th century belief that organisms are intrinsically bound to improve themselves, and that changes are progressive and arise through inheritance of acquired characters, as in Lamarckism. The ... The Baby Boom Galaxy is so named because it generates over 4,000 stars per year (compared to an average of just 10 per year for the Milky Way). At that rate, the galaxy needs only 50 million years to grow ...
ESO 510-G13 is a spiral galaxy approximately 150 million light-years away in the constellation Hydra. The equatorial dust cloud is heavily warped; this may indicate that ESO 510-G13 has interacted with another galaxy. If this is the case, it would ...
Lars Hernquist is a theoretical astrophysicist and Mallinckrodt Professor of Astrophysics at the Harvard-Smithsonian Center for Astrophysics. He is best known for his research on dynamical processes in cosmology and galaxy formation/galaxy evolution. Adapted from the Wikipedia article Lars Hernquist, ...
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Visual excerpt from the PBS HDTV ''Runaway Universe'', courtesy WGBH-NOVA and Tom Lucas Productions.The Adaptive Mesh Refinement simulation grid automatically refines into subgrids to develop...
Series: "Science Today" [Science] [Show ID: 18325]...
Before we get all the way back to the Big Bang, there may have been a time when stars like our Sun and galaxies like...