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Latest Extragalactic astronomy Stories

Astronomers Size Up The Smallest Galaxy In The Universe
2013-06-10 11:54:04

Lee Rannals for redOrbit.com - Your Universe Online University of California, Irvine scientists reported on Monday that they have measured the least massive galaxy in the known universe. The researchers wrote in The Astrophysical Journal that the tiny dwarf galaxy, Segue 2, only holds a mere 1,000 stars within its realm. Their findings offer clues about how iron, carbon and other elements help form human life. “Finding a galaxy as tiny as Segue 2 is like discovering an elephant...

Spitzer Finds New Stars At Edge Of Milky Way
2013-06-06 09:48:09

April Flowers for redOrbit.com - Your Universe Online New images from NASA´s Spitzer Space Telescope reveal blooming stars at the fringe of the Milky Way galaxy, far from its crowded core. The images were collected as part of the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (Glimpse 360) project. Glimpse 360 is mapping the celestial topography of our galaxy and will make the map and a full 360-degree view of the Milky Way plane that will be available later this year....

NASA’s Swift Maps Magellanic Clouds With Ultraviolet
2013-06-04 07:38:12

April Flowers for redOrbit.com — Your Universe Online Using NASA´s Swift satellite, astronomers from NASA and Pennsylvania State University have created the most detailed ultraviolet surveys to-date of the two closest major galaxies, the Large and Small Magellanic Clouds. "We took thousands of images and assembled them into seamless portraits of the main body of each galaxy, resulting in the highest-resolution surveys of the Magellanic Clouds at ultraviolet wavelengths,"...

Earth's Neighborhood In The Milky Way Sits On Spiral Arm, Not Spur
2013-06-03 14:49:23

Lee Rannals for redOrbit.com — Your Universe Online New research using the ultra-sharp radio vision of the National Science Foundation's (NSF) Very Long Baseline Array (VLBA) has determined that we live in a more upscale neighborhood in our galaxy than previously thought. Considering we reside inside the Milky Way, it is tough for scientists to predict exactly where in our galaxy we sit. Astronomers are able to get a bird's-eye view of other galaxies, but we must use different...

Astronomers Observe Galaxy In Act Of Dying
2013-06-03 13:16:28

Lee Rannals for redOrbit.com — Your Universe Online Astronomers announced at the 222nd American Astronomical Society meeting in Indianapolis that they have observed the first clear example of a galaxy in the act of dying. The team says they saw a bright dwarf galaxy relatively close to Earth's Milky Way that was "trailing fireballs." They said until now, there has been no clear example of this transformation happening. “We think we´re witnessing a critical stage in...

Galaxy Mega Merger Spotted By Herschel And Keck
2013-05-23 04:53:50

Watch the Video: Mega Galaxy Merger ] April Flowers for redOrbit.com - Your Universe Online Around 11 billion years ago, two hungry young galaxies collided and they are now forming a massive galaxy approximately 10 times the size of the Milky Way. The new mega-galaxy, HXMM01, was discovered as part of a UC-Irvine led project conducted with the W.M. Keck Observatory, the Herschel space observatory, and other research facilities around the world. It is extremely rare to capture the...


Latest Extragalactic astronomy Reference Libraries

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...

67_0efd63d045cdd74b7e0600e093355a42
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.

67_db348e4983c412eb62668e4377457b50
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...

67_8b8b742d654cb21ec4a1143054c4c9da
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...

67_90ce4ddfce29ea01827bb96393b20fce
2010-09-13 17:07:12

The M51 Group, located in Canes Venatici, is named after the brightest galaxy in the group, the Whirlpool Galaxy (M51A). The few other notable members include the companion galaxy to the Whirlpool Galaxy (M51B) and the Sunflower Galaxy (M63).

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Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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