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Latest Physical cosmology Stories

Black Holes Abundant Early Universe
2013-06-06 14:16:28

John P. Millis, PhD for redOrbit.com — Your Universe Online As telescopes peer into the distant background of the Universe they are, in effect, looking back in time. The light emitted from these objects has been traveling across the Universe for perhaps billions of years. So by analyzing the background light of the sky researchers can get a picture of the composition of the Universe early in its evolution. New data from NASA´s Chandra X-ray Observatory and NASA´s...

New Insights Into Big Bang From Keck Observatory
2013-06-06 13:09:02

John P. Millis, PhD for redOrbit.com — Your Universe Online The big bang theory is the leading theory to explain the origin of the Universe. While challengers exist, no other well-developed theory has substantiated itself as a serious contender. But this does not mean that the big bang is without its problems. One issue that has plagued our origins story is the relative abundance of lithium isotopes Li-6 and Li-7 in the oldest observed stars. These atoms would have been...

2013-06-05 12:22:15

WASHINGTON, June 5, 2013 /PRNewswire-USNewswire/ -- By comparing infrared and X-ray background signals across the same stretch of sky, an international team of astronomers has discovered evidence of a significant number of black holes that accompanied the first stars in the universe. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Using data from NASA's Chandra X-ray Observatory and NASA's Spitzer Space Telescope, which observes in the infrared, researchers have...

2013-06-04 23:28:17

Louis Del Monte´s webisodes aim to address scientifically how the universe will end. Minneapolis, Minnesota (PRWEB) June 04, 2013 In his newest two-part webisode, “End of the Universe”, author, physicist and CEO, Louis A. Del Monte gives a scientific view of how the universe is likely to end in the extremely distant future. “The topic I chose for my latest webisode on the ℠End of the Universe´ was not meant to frighten viewers, but rather to illuminate what...

Galaxies Discovered Buried In Dust
2013-06-01 05:33:58

redOrbit Staff & Wire Reports - Your Universe Online Approximately 80 percent of all unidentifiable millimeter wave signals emitted in the universe actually originate from galaxies, according to new research published in Saturday´s edition of the Astrophysical Journal Letters. Based on observations collected using Atacama Large Millimeter/sub-millimeter Array (ALMA) telescopes, professor Kouji Ohta and postdoctoral researcher Bunyo Hatsukade of Kyoto University in Japan and...

Gravitational Lensing Used To Seek Out Most Distant, Active Star Forming Galaxies
2013-05-29 04:53:02

Lee Rannals for redOrbit.com - Your Universe Online Scientists working with the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered the most distant and active star forming galaxies in our universe. The astronomers wrote in the journal Nature and Astrophysical Journal that they discovered these distant and enigmatic galaxies after surveying large areas of the sky with the 10-meter South Pole Telescope. They used ALMA to help them obtain higher resolution images. The...

Cold Gas May Fuel Galaxy And Star Formation
2013-05-26 05:49:55

redOrbit Staff & Wire Reports - Your Universe Online As galaxies grow over the course of billions of years, they apparently use the cosmic equivalent of bendy straws to feed on cold gas and gain mass, according to new research published in the May 20 edition of the Astrophysical Journal. The study is based on computer simulations conducted by Kyle Stewart, who is currently with California Baptist University in Riverside but completed most of the research while with NASA´s Jet...

Measuring All Light Since Big Bang May Provide Answers To Evolution Of Universe
2013-05-24 14:07:39

Lee Rannals for redOrbit.com — Your Universe Online Researchers wrote in The Astrophysical Journal that they have made the best measurement of all the light in the universe since the Big Bang yet. Measuring the number and energy of each particle of light or photon since the Big Bang could provide secrets about the nature and evolution of the Universe, such as how similar or different ancient galaxies were compared to the galaxies today. The researchers made the most accurate...

Mystery Of Nearby SS Cygni Star System Finally Resolved
2013-05-23 13:22:47

John P. Millis, PhD for redOrbit.com — Your Universe Online In 1990 the Hubble Space Telescope measured the distance to a nearby star system known as SS Cygni. Composed of a low-mass main sequence star and a compact object known as a white dwarf — a stellar remnant about the mass of our Sun, but compressed to the size of the Earth. The distance measured by Hubble puzzled scientists, as the measured brightness of the system was considerably higher than expected. If correct,...

PAPER Instrument In The Karoo Producing Ground-breaking Science And Spectacular Cosmic Images
2013-05-10 09:57:52

SKA Scientific studies done with the "PAPER" array, one of the world-class scientific instruments in South Africa's Karoo Radio Astronomy Reserve, is producing ground-breaking science and spectacular cosmic images, resulting in several important articles in top astronomy journals. The primary goal of PAPER (Precision Array to Probe the Epoch of Reionization) is to detect emission from the neutral gas that pervaded the universe before the first galaxies and black holes were formed. This...


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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