Latest Redshift Stories

Galaxy Clusters Offer Insight On Dark Matter
2012-11-21 09:56:07

April Flowers for redOrbit.com - Your Universe Online Dark Energy is one of the major puzzles of modern astronomy, and one tool that astronomers use to understand this force is encoded in the distribution of clusters of galaxies. A new study by a team of astronomers, led by Dr. Jeeseon Song at the University of Michigan, has yielded exquisitely precise distances of a large sample of clusters. These precise distances may lead to breakthroughs in understanding the expansion history of our...

BOSS Survey Reveals 48,000 Quasars
2012-11-13 10:38:57

Lee Rannals for redOrbit.com - Your Universe Online The Baryon Oscillation Spectroscopic Survey (BOSS) has announced the first major result of a new mapping technique, unveiling over 48,000 quasars. BOSS is the largest program of the third Sloan Digital Sky Survey (SDSS) and is mapping a huge volume of space to measure the role of dark energy in the evolution of the universe. “No technique for dark energy research has been able to probe this ancient era before, a time when...

2012-09-18 17:49:27

Lee Rannals for redOrbit.com — Your Universe Online Researchers are finding ways to map out the spread and structure of the universe through the light of quasars. Scientists have developed a technique that could offer up a never before seen look back to a time just after the Big Bang. They found, while analyzing the visible light from a small group of quasars, that patterns of light variation over time were consistent from one quasar to another when corrected for the celestial...

Dark Energy Almost 100 Percent Proven?
2012-09-13 09:56:52

April Flowers for redOrbit.com - Your Universe Online Since the 1990's, dark energy has been the most accepted hypothesis to explain the expansion rate of the Universe. A hypothetical form of energy, dark energy is thought to permeate all of space and accounts for about 73% of the total mass-energy of the universe. According to a team of astronomers from the University of Portsmouth and LMU University Munich, dark energy isn't so theoretical anymore. They say, it is really there....

First Public Data Release From The Baryon Oscillation Spectroscopic Survey (BOSS)
2012-08-08 10:08:02

Led by Berkeley Lab scientists, the Sloan Digital Sky Survey´s BOSS is bigger than all other spectroscopic surveys combined for measuring the universe's large-scale structure The Third Sloan Digital Sky Survey (SDSS-III) has issued Data Release 9 (DR9), the first public release of data from the Baryon Oscillation Spectroscopic Survey (BOSS). In this release BOSS, the largest of SDSS-III's four surveys, provides spectra for 535,995 newly observed galaxies, 102,100 quasars, and 116,474...

2012-03-30 08:27:44

Berkeley Lab scientists are leaders of BOSS, the Baryon Oscillation Spectroscopic Survey- They and their colleagues in the third Sloan Digital Sky Survey have announced the most precise measurements ever made of the era when dark energy turned on Some six billion light years ago, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction of all the matter it contained, the universe had been...

2012-03-29 07:28:38

The Sloan Digital Sky Survey (SDSS-III)  announced the most accurate measurements yet of the distances to galaxies in the faraway universe, giving an unprecedented look at the time when the universe first began to expand at an ever-increasing rate. Scientists from the University of Portsmouth and the Max-Planck Institute for Extraterrestrial Physics will present the new results in a press conference at 10:00 BST on Friday, March 30th at the National Astronomy Meeting in Manchester....

New SCUBA-2 Camera Reveals Wild Youth Of The Universe
2012-03-27 08:14:50

A team of astronomers from the UK, Canada and the Netherlands have commenced a revolutionary new study of cosmic star-formation history, looking back in time to when the universe was still in its lively and somewhat unruly youth! The consortium, co-led by University of Edinburgh astrophysicist Professor James Dunlop, is using a brand new camera called SCUBA-2, the most powerful camera ever developed for observing light at "sub-mm" wavelengths (light that has a wavelength 1000 times longer...

Galactic Brightness Helps Build Precision Model Of The Universe
2012-01-12 04:39:50

Berkeley Lab scientists and their Sloan Digital Sky Survey colleagues use galactic brightness to build a precision model of the cosmos Since 2000, the three Sloan Digital Sky Surveys (SDSS I, II, III) have surveyed well over a quarter of the night sky and produced the biggest color map of the universe in three dimensions ever. Now scientists at the U.S. Department of Energy´s Lawrence Berkeley National Laboratory (Berkeley Lab) and their SDSS colleagues, working with DOE´s...

Latest Redshift Reference Libraries

2010-09-08 16:02:39

As of 2009, JKCS 041 is a group of galaxies with the distinction of being the farthest away group from Earth ever observed. Seen at redshift 1.9, it is estimated to be 10.2 billion light years away. The cluster is located within the constellation Cetus at a photometrically determined redshift of z=1.9 at right ascension 2h 26m 44s declination -04° 41"² 37"³ (J2000.0).

2004-10-19 04:45:44

Large-Scale Structure of the Cosmos -- Stars are organised into galaxies which in turn appear to form clusters and superclusters, separated by voids. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. However, in 1989, Margaret Geller and John Huchra discovered the "Great Wall", a sheet of galaxies more than 500 million light years long...

2004-10-19 04:45:44

Cosmology -- area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. Modern Cosmological Theories Present models of the universe hold two fundamental premises: the cosmological principle and the dominant role of gravitation. Derived by Hubble, the cosmological principle holds that if a large enough sample of galaxies is considered, the universe looks the same from all positions and in all directions in space. The second point...

2004-10-19 04:45:42

Redshift -- Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect. More specifically, the term redshift is used for the observation that the spectrum of light emitted by distant galaxies is shifted to lower frequencies (towards the red end of the spectrum, hence the name) when...

2004-10-19 04:45:42

Quasar -- A quasar (from quasi-stellar radio source) is an astronomical object that looks like a star in optical telescopes (i.e. it is a point source), but has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law and that their redshift indicates that they are typically very distant from Earth; we observe them as they were several billions of years ago. Since we can see them despite their distance, they must emit more...

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Word of the Day
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.