News tagged with brightest galaxies


Merging Galaxies in Groups

How Do Galaxies Grow?

Space & Earth / Astronomy

created Aug 26, 2008 | popularity 4.4 / 5 (14) | comments 2

How do galaxies form? The most widely accepted answer to this fundamental question is the model of 'hierarchical formation', a step-wise process in which small galaxies merge to build larger ones. One can ...





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VISTA: Pioneering new survey telescope starts work

VISTA: Pioneering new survey telescope starts work

Space & Earth / Astronomy

created 11 hours ago | popularity 5 / 5 (7) | comments 1

VISTA is the latest telescope to be added to ESO's Paranal Observatory in the Atacama Desert of northern Chile. It is housed on the peak adjacent to the one hosting the ESO Very Large Telescope (VLT) and shares ...


Scientists observe super-massive black holes using Keck Observatory in Hawaii

Scientists observe super-massive black holes using Keck Observatory in Hawaii

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 5 / 5 (7) | comments 3

An international team of scientists has observed four super-massive black holes at the center of galaxies, which may provide new information on how these central black hole systems operate. Their findings ...


WISE Launch Delayed 24 Hours

WISE Launch Delayed 24 Hours

Space & Earth / Space Exploration

created Dec 10, 2009 | popularity 5 / 5 (2) | comments 0

(PhysOrg.com) -- Liftoff of a Delta II rocket and its NASA payload, the Wide-field Infrared Survey Explorer (WISE), has been delayed 24 hours. At the soonest, launch now will be Saturday, Dec. 12, during a ...


Galaxy Collision Switches on Black Hole

Galaxy Collision Switches on Black Hole

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 4.5 / 5 (4) | comments 1

(PhysOrg.com) -- This composite image of data from three different telescopes shows an ongoing collision between two galaxies, NGC 6872 and IC 4970.


Suzaku catches retreat of a black hole's disk

Suzaku catches retreat of a black hole's disk

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 4.5 / 5 (15) | comments 1

(PhysOrg.com) -- Studies of one of the galaxy's most active black-hole binaries reveal a dramatic change that will help scientists better understand how these systems expel fast-moving particle jets.


A faint star orbiting the Big Dipper's Alcor discovered

A faint star orbiting the Big Dipper's Alcor discovered

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 5 / 5 (5) | comments 0

Next time you spy the Big Dipper, keep in mind that there is another star, invisible to the unaided eye, contributing to this constellation.


Decline of hormone therapy decreases breast cancer cases, analysis finds

Medicine & Health / Cancer

created Dec 09, 2009 | popularity 2.5 / 5 (4) | comments 0

The declining use of hormone therapy among women has led to 6,000 fewer invasive breast cancer cases a year, according to an analysis by researchers at the University of Wisconsin-Madison. The research quantifies and advances ...


NASA's WISE Set to Blast Off and Map the Skies

NASA's WISE Set to Blast Off and Map the Skies

Space & Earth / Space Exploration

created Dec 09, 2009 | popularity 4.3 / 5 (3) | comments 0

(PhysOrg.com) -- The countdown clock is ticking, with just days to go before the Wide-field Infrared Survey Explorer, or WISE, rockets into space on a mission to map the entire sky in infrared light.


Fermi sees brightest-ever blazar flare

Fermi sees brightest-ever blazar flare

Space & Earth / Astronomy

created Dec 09, 2009 | popularity 4.4 / 5 (10) | comments 3

(PhysOrg.com) -- A galaxy located billions of light-years away is commanding the attention of NASA's Fermi Gamma-ray Space Telescope and astronomers around the globe. Thanks to a series of flares that began ...


Swift spacecraft

Magnetic Power Revealed in Gamma-Ray Burst Jet

Space & Earth / Astronomy

created Dec 09, 2009 | popularity 4.1 / 5 (9) | comments 7

(PhysOrg.com) -- A specialized camera on a telescope operated by U.K. astronomers from Liverpool has made the first measurement of magnetic fields in the afterglow of a gamma-ray burst (GRB). The result is ...



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