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Latest Physical cosmology Stories

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...

Rare Supernovae Are The Most Luminous Ever Observed
2012-11-02 04:39:13

April Flowers for redOrbit.com - Your Universe Online An international team, including Raymond Carlberg of the University of Toronto's Department of Astronomy & Astrophysics, has discovered the most-distant, super-luminous supernovae observed to date. The violent stellar explosions which caused these supernovae would have occurred soon after the Big Bang when the universe was much younger. "The objects are both unusually bright and unusually slow to fade. These are properties that...

The Local Universe Offered Up In Unprecedented Detail
2012-10-31 13:21:28

Lee Rannals for redOrbit.com - Your Universe Online The intimate details of 100 galaxies in the local universe have been published by the Calar Alto Legacy Integral Field Area survey (CALIFA). The survey offers up new data, representing the first large-scale effort at "two plus one" mapping of galaxies. For every pixel within each two-dimensional image, scientists could perform a detailed analysis and provide information about dynamics and chemical composition. This information could...

Stars Living On The Edge
2012-10-25 04:37:37

April Flowers for redOrbit.com - Your Universe Online A mysterious infrared glow seen across the entire sky comes from isolated stars beyond the edges of galaxies, according to a new study using data from NASA's Spitzer Space Telescope. The study, published in the journal Nature, suggests that these stars once belonged to the galaxies they edge up to, but were stripped away into the relatively empty space outside during violent galaxy mergers. Astronomers have disagreed for a long time...

New Details Shed Light On Galaxy Evolution
2012-10-22 12:54:34

[WATCH VIDEO: Computer Model Shows a Disk Galaxy´s Life History] Lee Rannals for redOrbit.com — Your Universe Online After a comprehensive study of hundreds of galaxies, astronomers have uncovered a surprising trend in galaxy evolution. The team studied a sample of 544 blue galaxies from the Deep Extragalactic Evolutionary Probe 2 (DEEP2) Redshift Survey, and wrote about their findings in The Astrophysical Journal. "Astronomers thought disk galaxies in the nearby...

Hubble Helps Map Dark Matter In 3D
2012-10-17 04:20:05

April Flowers for redOrbit.com - Your Universe Online A giant filament of dark matter extends 60 million light-years from one of the most massive galaxy clusters known. Leftover from the very first moments after the Big Bang, the filament is part of the cosmic web that constitutes the structure of the Universe. Scientists using the NASA/ESA Hubble Space Telescope have studied this filament in 3D for the first time and conclude that if the filament is representative of the rest of the...

Galactic Collisions Between Big Galaxies Form Even Bigger Galaxies
2012-10-12 14:36:09

Brett Smith for redOrbit.com - Your Universe Online When massive galaxies belly-up to the interstellar buffet, their centers expand as they gobble up other galaxies that contain billions and billions of stars, according to a new report from University of Utah astronomers. "We found that during the last 6 billion years, the matter that makes up massive elliptical galaxies is getting more concentrated toward the centers of those galaxies. This is evidence that big galaxies are crashing...

Author Richard Panek Wins 2012 AIP Science Communication Awards For Science Writing
2012-10-11 08:12:40

The American Institute of Physics (AIP) has selected author Richard Panek as winner of this year´s AIP Science Communication Award in the Science Writing category for his book The 4% Universe: Dark Matter, Dark Energy, and the Race to Discover the Rest of Reality. The selection committee praised the book for its excellent writing and accurate depictions of the process of scientific investigation. “The mysteries of cosmology easily capture the imagination,” said...


Latest Physical cosmology 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_d4a20fda769b165e44826492e9e54549
2010-09-16 15:18:29

The Virgo Cluster consists of galaxies at a distance of around 59 Mly away in the constellation Virgo. Containing between 1300 to 2000 galaxies the Virgo Cluster is the heart of the Local Supercluster. Its mass is estimated at 1.2 × 1015 M☉ out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc. Most of the brighter galaxies in the cluster were discovered by Charles Messier in the late 1770's and early 1780's, including the giant elliptical Messier 87. Messier...

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...

67_4ae26d06e7989cbc4cd9f57abd6295f5
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).

45_b90d45a4e7d89d873d39705549e516ce
2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

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Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
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