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Discovery of dwarf galaxy a big find for astronomy team

Space & Earth / Astronomy

created Oct 20, 2009 | popularity 4.8 / 5 (13) | comments 4

In some ways, discovering a new galaxy is all in a day's work for John Cannon, Macalester College assistant astronomy professor.


Swift makes best-ever ultraviolet portrait of Andromeda Galaxy

Swift makes best-ever ultraviolet portrait of Andromeda Galaxy

Space & Earth / Astronomy

created Sep 16, 2009 | popularity 5 / 5 (5) | comments 1

In a break from its usual task of searching for distant cosmic explosions, NASA's Swift satellite has acquired the highest-resolution view of a neighboring spiral galaxy ever attained in the ultraviolet. The ...


NGC 4945: The Milky Way's not-so-distant Cousin

NGC 4945: The Milky Way's not-so-distant Cousin

Space & Earth / Astronomy

created Sep 02, 2009 | popularity 4.7 / 5 (3) | comments 2

(PhysOrg.com) -- ESO has released a striking new image of a nearby galaxy that many astronomers think closely resembles our own Milky Way. Though the galaxy is seen edge-on, observations of NGC 4945 suggest ...


Galaxy Zoo hunters help astronomers discover rare 'Green Pea' galaxies

Galaxy Zoo Hunters Help Astronomers Discover Rare 'Green Pea' Galaxies

Space & Earth / Astronomy

created Jul 27, 2009 | popularity 4.8 / 5 (11) | comments 2

A team of astronomers has discovered a group of rare galaxies called the "Green Peas" with the help of citizen scientists working through an online project called Galaxy Zoo. The finding could lend unique ...


A Galaxy Collision in Action

A Galaxy Collision in Action

Space & Earth / Astronomy

created Jul 09, 2009 | popularity 4.7 / 5 (10) | comments 2

This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. The curved, light blue ridge running ...


Unusual shape of exploded star puzzles scientists

Unusual shape of exploded star puzzles scientists

Space & Earth / Astronomy

created Jun 17, 2009 | popularity 4.3 / 5 (12) | comments 2

Penn State astronomers have used NASA's Chandra X-ray Observatory to produce a new image of a ghostly exploded star with an unusual shape in a galaxy near the Milky Way. Astronomers think the object may be ...


Researchers explain the activity of black holes at the centre of galaxy clusters

Researchers explain the activity of black holes at the centre of galaxy clusters

Space & Earth / Astronomy

created Sep 04, 2009 | popularity 3.9 / 5 (15) | comments 27

(PhysOrg.com) -- Astronomers at the University of Bonn have clarified the connection between black holes at the centre of galaxy clusters and surrounding gas, which serves them as "food". The scientists have ...


The Energy Sources of Ultraluminous Galaxies

The Energy Sources of Ultraluminous Galaxies

Space & Earth / Astronomy

created Nov 27, 2009 | popularity 4.7 / 5 (20) | comments 3

(PhysOrg.com) -- Ultraluminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns; for comparison, the Milky Way galaxy has a typical (and much more modest) luminosity ...


XMM-Newton takes astronomers to a black hole's edge

XMM-Newton takes astronomers to a black hole's edge

Space & Earth / Astronomy

created May 27, 2009 | popularity 4.9 / 5 (9) | comments 9

(PhysOrg.com) -- Using new data from ESA's XMM-Newton spaceborne observatory, astronomers have probed closer than ever to a supermassive black hole lying deep at the core of a distant active galaxy.


Is the Milky Way doomed to be destroyed by galactic bombardment? Probably not, study says

Is the Milky Way doomed to be destroyed by galactic bombardment? Probably not

Space & Earth / Astronomy

created Aug 31, 2009 | popularity 4.3 / 5 (12) | comments 2

(PhysOrg.com) -- As scientists attempt to learn more about how galaxies evolve, an open question has been whether collisions with our dwarf galactic neighbors will one day tear apart the disk of the Milky ...


Fermi finds gamma-ray galaxy surprises

Fermi telescope finds gamma-ray galaxy surprises

Space & Earth / Astronomy

created Jul 14, 2009 | popularity 4.6 / 5 (13) | comments 6

Back in June 1991, just before the launch of NASA's Compton Gamma-Ray Observatory, astronomers knew of gamma rays from exactly one galaxy beyond our own. To their surprise and delight, the satellite captured ...


Astrophysicists solve mystery in Milky Way galaxy

Astrophysicists solve mystery in Milky Way galaxy

Space & Earth / Astronomy

created Jul 09, 2009 | popularity 4.7 / 5 (19) | comments 7

A team of astrophysicists has solved a mystery that led some scientists to speculate that the distribution of certain gamma rays in our Milky Way galaxy was evidence of a form of undetectable "dark matter" ...


Starburst galaxy sheds light on longstanding cosmic mystery

Starburst galaxy sheds light on longstanding cosmic mystery

Space & Earth / Astronomy

created Nov 02, 2009 | popularity 4.3 / 5 (3) | comments 0

(PhysOrg.com) -- An international collaboration that includes scientists from the University of Delaware's Bartol Research Institute in the Department of Physics and Astronomy has discovered very-high-energy ...


Herschel views deep-space pearls on a cosmic string

Herschel views deep-space pearls on a cosmic string

Space & Earth / Astronomy

created Oct 02, 2009 | popularity 4.7 / 5 (6) | comments 5

(PhysOrg.com) -- Herschel has delivered spectacular vistas of cold gas clouds lying near the plane of the Milky Way, revealing intense, unexpected activity. The dark, cool region is dotted with stellar factories, ...


Astronomers Find Hyperactive Galaxies in the Early Universe

Astronomers Find Hyperactive Galaxies in the Early Universe

Space & Earth / Astronomy

created Aug 05, 2009 | popularity 4.6 / 5 (8) | comments 22

(PhysOrg.com) -- Looking almost 11 billion years into the past, astronomers have measured the motions of stars for the first time in a very distant galaxy and clocked speeds upwards of one million miles per ...