Latest Spiral galaxies Stories

Astronomers Catch Distant Galaxy Snacking On Gas
2013-07-04 13:01:16

Lee Rannals for redOrbit.com - Your Universe Online Astronomers were recently able to catch a distant galaxy in the act of snacking on nearby gas while using the European Southern Observatory's (ESO) Very Large Telescope (VLT). The team wrote in the journal Science about how they were able to make the best direct observational evidence so far supporting the theory that galaxies pull in and devour nearby material to grow and form stars. Scientists have always suspected galaxies grow this...

GALEX Space Telescope Decommissioned On Friday
2013-06-29 08:11:35

redOrbit Staff & Wire Reports - Your Universe Online After more than a decade of service, NASA officially decommissioned its Galaxy Evolution Explorer (GALEX) orbiting space telescope Friday afternoon. Operators at Virginia-based Orbital Sciences Corporation sent the signal to decommission GALEX at 3:09pm EDT (12:09pm PDT) on June 28. The telescope, which was launched into orbit on April 28, 2003, observed hundreds of millions of galaxies in ultraviolet light across 10 billion...

Spiral Galaxies Larger Than Thought
2013-06-27 13:50:10

Lee Rannals for redOrbit.com - Your Universe Online Astronomers now say spiral galaxies like the Milky Way galaxy are actually larger than previously thought. Scientists from several universities used the Hubble Space Telescope to determine that normal spiral galaxies are surrounded by halos of gas that can extend to over one million light-years in diameter. With this new estimate, it brings the Milky Way from just 100,000 light-years across to roughly 1,100,000 light-years. The...

New Hubble Image Shows Interacting Galaxies
2013-06-20 18:59:33

Lee Rannals for redorbit.com — Your Universe Online New images taken by the Hubble Space Telescope of a pair of galaxies experiencing a close encounter have been released. The new image features interacting galaxies known as Arp 142. These galaxies have strayed a little too close to each other, causing them to interact and create big changes in both objects. Astronomers say the two galaxies are interacting violently by exchanging matter and causing havoc. Arp 142 was named...

Black Hole Count Keeps Growing For The Andromeda Galaxy
2013-06-13 06:10:47

April Flowers for redOrbit.com - Your Universe Online Astronomers have discovered an unprecedented number of black holes in the Andromeda Galaxy (M31), one of the Milky Way´s nearest cosmic neighbors, using data from NASA´s Chandra X-ray Observatory. By analyzing more than 150 Chandra observations taken over 13 years, the research team has identified 26 black hole candidates. This is the largest number discovered to date in a galaxy outside our own. Many scientists consider...

More Galactic Gas In Milky Way Than We Thought
2013-06-11 14:31:02

Brett Smith for redOrbit.com - Your Universe Online The building blocks of stars, clouds of molecular gases, are strewn across the Milky Way, and a new survey from the European Space Agency (ESA) and NASA has found that scientists have been underestimating the amount of gas in the galaxy by about one-third. According to a new report in journal Astronomy and Astrophysics, the discovery was made possible by the orbiting Hershel Space Observatory, a joint venture between the two space...

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...

Pinwheeling Through The Sky
2013-06-10 09:49:48

ESA The face-on Pinwheel spiral galaxy is seen at ultraviolet wavelengths in this image taken by ESA´s XMM-Newton space telescope. Also known as M101, the galaxy lies 21 million light-years away in the constellation Ursa Major. It measures 170 000 light-years across — nearly twice the diameter of our own Milky Way Galaxy — and contains at least a trillion stars. About a billion of these stars could be similar to our own Sun. More often seen in visible light, here the...

Latest Spiral galaxies Reference Libraries

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...

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...

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...

2010-09-13 17:05:00

The Local Group, compromising more than 30 galaxies (including dwarf galaxies and the Milky Way), is a group of galaxies with a gravitational center located somewhere between the Milky Way and the Andromeda Galaxy. With a binary (dumbbell) shape and a total mass of (1.29 ± 0.14) × 1012M the Local group covers a 10 million light-year diameter. The local group is part of the Virgo Supercluster. The two largest galaxies in the group are the Milky Way and the Andromeda both Spiral...

2010-09-13 16:27:55

Stephan's Quintet in the constellation Pegasus is a visual grouping of five galaxies which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory and is the most studied of all the compact galaxy groups. NGC 7320, which has extensive H II regions, is the brightest member of the visual grouping and is where active star formation is occurring. Hickson Compact Group 92, which contains four of the five...

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