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Latest Large-scale structure of the cosmos Stories

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2012-08-21 17:05:23

Brett Smith for redOrbit.com - Your Universe Online A debate that has been raging over the distribution of matter in the universe can finally be put to bed thanks to the WiggleZ Dark Matter survey that was conducted over 276 nights from August 2006 to January 2011. The majority of physicists believe that the matter in the universe is distributed evenly on the largest scales and this outlook has fueled everything from Einstein´s equations to calculations that are the foundation for...

Hubble Images Isolated Galaxy DDO 190
2012-08-18 06:55:57

redOrbit Staff & Wire Reports - Your Universe Online An image of an isolated galaxy located approximately nine million light years from the Milky Way has been captured using the Hubble Space Telescope, NASA officials announced on Friday. The picture features a relatively isolated, dwarf irregular galaxy known as DDO 190, which officials from the US space agency describe as relatively small and lacking in structure. The galaxy, which was identified and code named in honor of the...

There's Plenty Of Dark Matter Near The Sun
2012-08-09 14:54:46

April Flowers for redOrbit.com - Your Universe Online Astronomers at the University of Zurich, ETH Zurich, the University of Leicester and NOAC Beijing have found large amounts of invisible "dark matter" near the Sun. They also found tantalizing hints of a new dark matter component within our own galaxy. The study results, which will be published in the journal Monthly Notices of the Royal Astronomical Society, are consistent with the theory that the Milky Way is surrounded by a massive...

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2012-08-08 21:06:45

April Flowers for redOrbit.com - Your Universe Online The largest-ever 3-D map of massive galaxies and distant black holes was released this week in the hopes that it will help explain the mysteries of "dark matter" and "dark energy." This new sky map is the work of the Sloan Digital Sky Survey III (SDSS-111) collaboration. SDSS-III is mission is to map the Milky Way, search for extrasolar planets, and solve the mystery of dark matter. The research team began to gather data in 2008 for...

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...

VLT Finds Deceptively Tranquil Blue Galaxy
2012-08-01 06:05:40

Video: Panning Across Spiral Galaxy NGC 1187 | Video: Zooming In On Spiral Galaxy NGC 1187 April Flowers for redOrbit.com - Your Universe Online About 60 million light-years away, there is a beautiful, tranquil looking blue spiral galaxy named NGC 1187. This galaxy is in the constellation of Eridanus, or The River. Researchers at the European Southern Observatory (ESO) have been watching and recording data from NGC 1187 for about a year using the Very Large Telescope (VLT) at the La...

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2012-07-13 19:24:49

Astronomers have puzzled over why some puny, extremely faint dwarf galaxies spotted in our Milky Way galaxy's back yard contain so few stars. These ghost-like galaxies are thought to be some of the tiniest, oldest, and most pristine galaxies in the universe. They have been discovered over the past decade by astronomers using automated computer techniques to search through the images of the Sloan Digital Sky Survey. But astronomers needed NASA's Hubble Space Telescope to help solve the...

Dark Galaxies Of The Early Universe Seen For The First Time
2012-07-11 17:25:51

Dark galaxies are small, gas-rich galaxies in the early Universe that are very inefficient at forming stars. They are predicted by theories of galaxy formation and are thought to be the building blocks of today's bright, star-filled galaxies. Astronomers think that they may have fed large galaxies with much of the gas that later formed into the stars that exist today. Because they are essentially devoid of stars, these dark galaxies don't emit much light, making them very hard to detect....

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2012-07-10 13:19:20

Lee Rannals for redOrbit.com - Your Universe Online For the first time, scientists have detected part of the invisible dark matter skeleton of the universe, where over half of all matter is believed to reside. The discovery confirms a key prediction in the theory of how the universe's current web-like structure came to be. The map of the known universe shows that most galaxies are organized into clusters, but some are situated along filaments that connect to the clusters....


Latest Large-scale structure of the cosmos Reference Libraries

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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...

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2010-09-16 15:14:03

The two Magellanic Clouds (or Nubeculae Magellani), composed of the Large Megellanic Cloud and the Small Magellanic Cloud, are irregular dwarf galaxies visible in the southern hemisphere. They are members of our Local Group and orbit the Milky Way galaxy. Persian astronomer Al Sufi, in 964, was the first to have written anything about the Magellanic Clouds proving they have been known since early time amongst the Middle East peoples. Sufi, in his Book of Fixed Stars, calls the clouds...

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2010-09-16 15:00:46

The NGC 5866, located in the Draco constellation, is named after the galaxy with the highest magnitude however some catalogs list NGC 5907 as the brightest member. The M51 Group and the M101 Group are NGC 5866 closest neighbor. The distances between these groups are similar which suggest the three groups are part of a single large, loose, elongated group. However, most identification methods consider them separate.

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2010-09-13 17:13:25

The M101 Group, one of many in the Virgo Supercluster, is located in Ursa Major and named after the brightest galaxy in the group, the Pinwheel Galaxy (M101). The group is composed mostly of members that are companions of the Pinwheel Galaxy. The M51 Group and the NGC 5866 Group are M101's closest neighbor. The distances between these groups are similar which suggest the three groups are part of a single large, loose, elongated group. However, most identification methods consider them...

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2010-09-13 17:09:55

The M81 Group, containing the well known galaxies Messier 81 and Messier 82, is a group of galaxies within the constellation Ursa Major. Along with Messier 81 and 82 are several other galaxies with apparent brightness. The center, located at an approximate distance of 3.6 Mpc, is one of the nearest groups to the Local Group. The total estimated mass of the group is (1.03 ± 0.17) × 1012M☉. The Virgo Supercluster contains the M81 Group, the Local Group, and some other nearby...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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