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Latest Dark matter Stories

Lack Of Dwarf Galaxies Around Milky Way Perplexes Physicists
2013-02-01 11:48:09

Brett Smith for redOrbit.com - Your Universe Online Studying the physics of the universe can be a controversial and often contradictory proposition, with theories and calculations often not matching with observations. However, new research from Leibniz Institute for Astrophysics Potsdam in Germany, has shed some light on one situation involving differences between theory and observation. Scientists at the institute have found that a phenomenon known as “cosmic web...

NASA Joins ESA In Euclid Mission
2013-01-24 12:37:25

Lee Rannals for redOrbit.com - Your Universe Online NASA and the European Space Agency (ESA) are partnering up on the Euclid mission to investigate dark matter and dark energy together. The Euclid space telescope will launch in 2020 with about a 4-feet-diameter telescope and two scientific instruments that will map the shape, brightness and 3D distribution of two billion galaxies. With the mission, "scientists hope to solve key problems in our understanding of the evolution and fate...

2013-01-24 12:21:02

WASHINGTON, Jan. 24, 2013 /PRNewswire-USNewswire/ -- NASA has joined the European Space Agency's (ESA's) Euclid mission, a space telescope designed to investigate the cosmological mysteries of dark matter and dark energy. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Euclid will launch in 2020 and spend six years mapping the locations and measuring the shapes of as many as 2 billion galaxies spread over more than one-third of the sky. It will study the evolution of our...

How Stars Die And Black Holes Form: Your Universe Today Podcasts
2013-01-23 12:17:54

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream "How Stars Die And Black Holes Form": Your Universe Today Podcasts (Or right-click on the above link to download the file to your computer) Black holes are among the most exotic, mysterious and perplexing objects in the Universe. They are swallowers of light, destroyers of stars and the engines that drive our galaxies. Some believe they could even hold the key to interstellar travel and may perhaps...

Fermi Telescope Turns to Dark Matter Search
2013-01-21 10:58:25

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online For much of the last century, scientists have been searching for a mysterious substance thought to make up about 85 percent of the total mass of the Universe. Without it, galactic rotation curves, galaxy interactions and the very structure of the Universe are inconsistent with our knowledge of physics. Yet, this so-called dark matter remains elusive. One reason researchers have had such a difficult time finding and...

Brown Dwarf Weather Map Shows A Stormy Atmosphere
2013-01-09 08:38:22

redOrbit Staff & Wire Reports - Your Universe Online By using the Hubble and Spitzer space telescopes, NASA officials say they have managed to complete the most detailed weather map to date for the cool, planet-like stars known as brown dwarfs. Brown dwarfs, which are also sometimes known as failed stars, form out of condensing gas but do not have the mass in order to fuse hydrogen atoms and produce energy, officials from the US space agency explained in a recent statement. As a...

2013-01-08 20:20:06

WASHINGTON, Jan. 8, 2013 /PRNewswire-USNewswire/ -- Astronomers using NASA's Spitzer and Hubble space telescopes have probed the stormy atmosphere of a brown dwarf, creating the most detailed "weather map" yet for this class of cool, star-like orbs. The forecast shows wind-driven, planet-sized clouds enshrouding these strange worlds. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Brown dwarfs form out of condensing gas, as stars do, but lack the mass to fuse hydrogen...

2013-01-07 20:21:05

WASHINGTON, Jan. 7, 2013 /PRNewswire-USNewswire/ -- NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, set its X-ray eyes on a spiral galaxy and caught the brilliant glow of two black holes lurking inside. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The new image is being released Monday along with NuSTAR's view of the supernova remnant Cassiopeia A, at the American Astronomical Society meeting in Long Beach, Calif. "These new images showcase why NuSTAR...

How Big Can Black Holes Get?
2012-12-19 07:56:28

Lee Rannals for redOrbit.com - Your Universe Online According to a study using data from NASA's Chandra X-ray Observatory, there may be more ultramassive black holes in the Universe than previously thought. A new analysis has looked at the brightest galaxies in a sample of 18 galaxy clusters in order to target the largest black holes. The scientists' work suggests that at least ten of the galaxies contain an ultramassive black hole, weighing between 10 and 40 billion times the mass...

Astronomers Observe White Dwarfs Imitating Black Holes
2012-12-18 14:20:20

Lee Rannals for redOrbit.com — Your Universe Online University of Southampton researchers reported in The Astrophysical Journal that they have observed bright X-ray flares in a nearby galaxy being produced by a white dwarf. The team made the discovery by detecting a dramatic, short-lived X-ray flare that was picked up by an X-ray telescope on the International Space Station (ISS). Astronomers used optical telescopes in South Africa and Chile to help observe the flare, called...


Latest Dark matter Reference Libraries

Cosmology
2014-01-12 00:00:00

Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...

45_03c916cf051c1a581c0d52b3ccdd7561
2010-09-13 16:56:08

The Coma Cluster (Abell 1656), along with the Leo Cluster, is one of two major clusters compromising the Coma Supercluster. It contains over 1000 identified galaxies. Most of the galaxies in the center of the Coma Cluster are elliptical galaxies including both dwarf and giant. However the center is dominated by NGC 4874 and NGC 4889, two giant elliptical galaxies. The brightest galaxies are visible, a few degrees north of the galactic pole, with an amateur telescope larger than 20 cm. The...

45_ea0b4f3c063ef1aeec4ef6fed79a5d9d
2010-09-07 17:31:13

The Bullet Cluster is made up of two colliding clusters galaxies. According to a 2006 study, the Bullet Cluster also shows the best evidence for the existence of Dark Matter. From observations of galaxy cluster collisions it has been found that many show displacement between their center of visible matter and their gravitational potential. Each component, stars, gas, and dark matter, within a cluster pair behaves differently during a collision allowing for each to be studied separately....

45_274ba7ddcce89663fc213d79e864e44b
2010-09-07 17:03:18

The Abell 520 galaxy cluster is an strange structure formed by a major merger. Due to its odd and chaotic nature it has been given the nick-name the Train Wreck Cluster. The Dark Matter within the cluster does not act as expected like it does in other clusters, therefore, Abell 520 creates problems for many of the prevailing theories about Dark Matter. It also disrupts many alternative theories of modified gravity. Similar to the Bullet Cluster the gas contents and galaxies within the...

67_d2968798d508f86b18fbbe3396553cd4
2010-09-13 16:46:47

The cluster CL0024+17, located in Pisces, is a galaxy cluster that is allowing astronomers to probe the distribution of dark matter in space. Dark matter does not reflect light and therefore cannot be seen. It is only detectable by the way its gravity affects the lights around it. Using gravitational lensing astronomers observe the distorted light around the dark matter and are able to tell where it is located within a cluster. A dark matter ring found near the cluster's center, by...

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