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Latest Physical cosmology Stories

Dark Matter Mapped On Largest Scale Observed
2012-01-10 06:03:52

Astronomers from the University of British Columbia and University of Edinburgh have mapped dark matter on the largest scale ever observed. The findings reveal a Universe comprised of an intricate cosmic web of dark matter and galaxies that span over a billion light years across. Researchers analyzed images of about 10 million galaxies in four different regions of the sky, and studied the distortion of the light emitted from these galaxies. "By analyzing light from the distant...

Rare Massive Galaxy From Early Stages Of Universe Creating Massive Numbers Of Stars
2011-12-22 11:10:16

A team of astronomers lead by Masami Ouchi of the University of Tokyo has found the most vigorous star-forming galaxy yet seen, from a period of time in the early stages of the creation of the universe known as ℠cosmic dawn´. The 750-million-year-old galaxy, known as GN-108036 among was forming stars equivalent to about a hundred Suns per year, when most of the universe was still cold and dark, reports Rob Waugh for Mail Online. The galaxy, 12.9 billion light-years away, was...

Image 1 - Low-mass Star Detected In Globular Cluster
2011-12-16 04:21:18

Even the most powerful high-tech telescopes are barely able to record remote low-mass and thus faint stars. Together with researchers from Poland and Chile, an astrophysicist from the University of Zurich has now detected a low-mass star in globular cluster M22 for the first time through microlensing. The result indicates that the overall mass of globular clusters might well be explained without enigmatic dark matter. Until now, it was merely assumed that low-mass and therefore extremely...

Early Black Holes Grew Big Eating Cold, Fast Food
2011-12-13 04:19:10

Largest Cosmological Simulation To-Date Explains How Supermassive Black Holes Came Into Existence Shortly After the Big Bang Researchers at Carnegie Mellon University´s Bruce and Astrid McWilliams Center for Cosmology have discovered what caused the rapid growth of early supermassive black holes — a steady diet of cold, fast food. Computer simulations, completed using supercomputers at the National Institute for Computational Sciences and the Pittsburgh Supercomputing Center...

Physicists Set Strongest Limit On Mass Of Dark Matter
2011-11-25 04:21:29

Brown University physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report in Physical Review Letters that dark matter must have a mass greater than 40 giga-electron volts. The distinction is important because it casts doubt on recent results from underground experiments that have reported detecting dark matter. If dark matter exists in the universe, scientists now have set the...

Astronomers Find Clouds Of Primordial Gas From The Early Universe
2011-11-11 04:10:18

For the first time, astronomers have found pristine clouds of the primordial gas that formed in the first few minutes after the Big Bang. The composition of the gas matches theoretical predictions, providing direct evidence in support of the modern cosmological explanation for the origins of elements in the universe. Only the lightest elements, mostly hydrogen and helium, were created in the Big Bang. Then a few hundred million years passed before clumps of this primordial gas condensed to...


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
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'