Quantcast

Latest Dark matter Stories

Red Dwarf Stars May Destroy Possibility Of Life In Their Systems
2013-07-01 18:43:05

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Most of the stars in the Universe are classified as red dwarf stars - stars considerably smaller and cooler than our Sun. About 75 percent of the main sequence stars in our galaxy are classified as such, so they represent an exciting population to study in the search for life beyond Earth. If it were found that Earth-like planets formed around red dwarf stars, then the door would be opened to the possibility we might soon...

University Of Utah Joins Sky Survey’s Fourth Phase With W.L. Eccles Grant
2013-06-25 12:01:02

University of Utah University of Utah astronomers will participate in a six-year project to study the formation of our Milky Way galaxy; map stars, gas and supermassive black holes in 10,000 neighbor galaxies; and chart 1 million galaxies and quasars to learn about mysterious “dark energy” that makes the universe expand. Five years after joining the third phase of the Sloan Digital Sky Survey, or SDSS-III, Utah’s largest research university is signing up for the fourth phase of...

New Hubble Image Shows Interacting Galaxies
2013-06-20 18:59:33

Lee Rannals for redorbit.com — Your Universe Online New images taken by the Hubble Space Telescope of a pair of galaxies experiencing a close encounter have been released. The new image features interacting galaxies known as Arp 142. These galaxies have strayed a little too close to each other, causing them to interact and create big changes in both objects. Astronomers say the two galaxies are interacting violently by exchanging matter and causing havoc. Arp 142 was named...

Pulsating White Dwarf Discovered By UT Astronomers
2013-06-20 12:47:40

Lee Rannals for redOrbit.com - Your Universe Online A group of astronomers have discovered pulsations from the crystallized remnant of a burnt-out star. The researchers recently reported in The Astrophysical Journal Letters that they were able to use the 2.1-meter Otto Struve Telescope at the University of Texas McDonald Observatory to take a look at the white dwarf GD 518 and discover the pulsations. This finding will allow scientists to see below the star's atmosphere and into its...

Black Hole X Ray Mystery Solved
2013-06-14 14:00:15

Lee Rannals for redOrbit.com - Your Universe Online Astronomers from several institutions have confirmed theories about how stellar-mass black holes produce their highest-energy light known as hard X-rays. Researchers from NASA, Johns Hopkins University and the Rochester Institute of Technology wrote in the Astrophysical Journal about how they were able to use supercomputer simulations of gas flowing into a back hole to reproduce a range of important X-ray features found in active black...

Project Maps Detailed Motions Of Universe
2013-06-14 11:35:29

Watch the video "Cosmography of the Local Universe" John P. Millis, PhD for redOrbit.com — Your Universe Online Visualizing the Universe is quite difficult. For one, the cosmos is enormous, far beyond the dimensions the human mind can comprehend. However, there is also the technical problem that we usually see images of the Universe as a two-dimensional image or map. Without the benefit of depth, we can´t truly appreciate the scale, orientation, and distribution of matter in...

Data Supports Cold Model Dark Matter
2013-06-13 15:54:45

John P. Millis, PhD for redOrbit.com — Your Universe Online Scientists continue the search to identify the nature of dark matter that seems to pervade the Universe. Since by its very nature it does not interact well — or perhaps at all — with electromagnetic radiation, direct detection of this mysterious form of matter has proven elusive. Despite this obstacle, astronomers have become convinced of its existence because of how it can be ℠seen´ to interact...

Euclid Dark Matter Mission Now In Development
2013-06-11 13:13:58

Lee Rannals for redOrbit.com — Your Universe Online The European Space Agency's (ESA's) Euclid module under development in France will be helping to explore dark energy and dark matter in the universe. Euclid will be launching in 2020 to help scientists better understand the evolution of the Universe since the Big Bang and its present accelerating expansion. Dark matter is invisible to normal telescopes, making it hard to study. However, the elusive subject plays a vital role in...

Dark Matter Not Actually Dark
2013-06-11 09:51:15

John P. Millis, PhD for redOrbit.com — Your Universe Online For more than 80 years physicists and astronomers have been searching for an elusive form of matter that appears to be responsible for most of the mass in the Universe. While the presence of this dark matter can be measured by the gravitational influence of the particles, directly “seeing” the mass has proven troublesome. The working theory for decades has been that the candidate particle should be...


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...

More Articles (13 articles) »
Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
Related