40 relations: Abell 2744, Abell catalogue, Bremsstrahlung, Bullet Cluster, Chandra X-ray Observatory, Coma Cluster, Dark matter, Einstein ring, Fornax Cluster, Galaxy, Galaxy group, Galaxy groups and clusters, Globular cluster, Gravitational binding energy, Gravitational lens, Gravity, Great Attractor, Hercules Cluster, Hubble Space Telescope, Hubble's law, Intracluster medium, Laniakea Supercluster, List of Abell clusters, MACS J0416.1-2403, MRC 1138-262, NASA, Norma Cluster, Open cluster, Orders of magnitude (length), Perseus Cluster, Radio halo, Radio relics, Shock waves in astrophysics, Smiley, SPT-CL J0546-5345, SPT-CL J2106-5844, Star cluster, Supercluster, Turbulence, Virgo Cluster.
Abell 2744, nicknamed Pandora's Cluster, is a giant galaxy cluster resulting from the simultaneous pile-up of at least four separate, smaller galaxy clusters that took place over a span of 350 million years.
The Abell catalog of rich clusters of galaxies is an all-sky catalog of 4,073 rich galaxy clusters of nominal redshift z ≤ 0.2.
Bremsstrahlung, from bremsen "to brake" and Strahlung "radiation"; i.e., "braking radiation" or "deceleration radiation", is electromagnetic radiation produced by the deceleration of a charged particle when deflected by another charged particle, typically an electron by an atomic nucleus.
The Bullet Cluster (1E 0657-558) consists of two colliding clusters of galaxies.
The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
The Coma Cluster (Abell 1656) is a large cluster of galaxies that contains over 1,000 identified galaxies.
Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.
In observational astronomy an Einstein ring, also known as an Einstein–Chwolson ring or Chwolson ring, is the deformation of the light from a source (such as a galaxy or star) into a ring through gravitational lensing of the source's light by an object with an extremely large mass (such as another galaxy or a black hole).
The Fornax Cluster is a cluster of galaxies lying at a distance of 19 megaparsecs (62 million light-years).
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
A galaxy group or group of galaxies (GrG) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 1010 times the luminosity of the Sun); collections of galaxies larger than groups that are first-order clustering are called galaxy clusters.
Galaxy groups and clusters are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation.
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
A gravitational binding energy is the minimum energy that must be added to a system for the system to cease being in a gravitationally bound state.
A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as the light travels towards the observer.
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
The Great Attractor is an apparent gravitational anomaly in intergalactic space at the center of the local Laniakea Supercluster, in which the Milky Way is located, in the so-called Zone of Avoidance that is notoriously difficult to observe in visible wavelengths due to the obscuring effects of our own galactic plane.
The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies some 500 million light-years distant in the constellation Hercules.
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
Hubble's law is the name for the observation in physical cosmology that.
In astronomy, the intracluster medium (ICM) is the superheated plasma that permeates a galaxy cluster.
The Laniakea Supercluster (Laniakea; also called Local Supercluster or Local SCl or sometimes Lenakaeia) is the galaxy supercluster that is home to the Milky Way and approximately 100,000 other nearby galaxies.
The Abell catalogue is a catalogue of approximately 4,000 galaxy clusters with at least 30 members, almost complete to a redshift of z.
MACS J0416.1-2403 is a galaxy cluster at a redshift of z.
The Spiderweb Galaxy (PGC 2826829, MRC 1138-262) is an irregular galaxy with a redshift of 2.156, which is 10.6 billion light years away.
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
The Norma Cluster (ACO 3627 or Abell 3627) is a rich cluster of galaxies located near the center of the Great Attractor; it is about distant.
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
The following are examples of orders of magnitude for different lengths.
The Perseus cluster (Abell 426) is a cluster of galaxies in the constellation Perseus.
Radio halos are large-scale sources of diffuse radio emission found in the center of some, but not all, galaxy clusters.
Radio Relics are diffuse synchrotron radio sources found in the peripheral regions of galaxy clusters.
Shock waves are common in astrophysical environments.
A smiley (sometimes called a happy face or smiley face) is a stylized representation of a smiling humanoid face that is a part of popular culture worldwide.
SPT-CL J0546-5345 is one of the most massive galaxy clusters ever found in the early universe.
SPT-CLJ2106-5844 is the galaxy cluster located 7.5 billion light years from Earth.
Star clusters are groups of stars.
A supercluster is a large group of smaller galaxy clusters or galaxy groups; it is among the largest-known structures of the cosmos.
In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.
The Virgo Cluster is a cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
ClG, Cluster (galaxies), Cluster (galaxy), Cluster galaxies, Cluster galaxy, Cluster of galaxies, Clusters (galaxies), Clusters (galaxy), Galactic Clusters, Galaxy Cluster, Galaxy clusters, Galaxy protocluster, Galaxy subcluster, Galaxy subclusters, Protocluster of galaxies, Subclump, Subcluster, Subclusters.