News tagged with black

results timeline


Stars Fueled by Dark Matter Could Hold Secrets to the Universe

Stars Fueled by Dark Matter Could Hold Secrets to the Universe

Physics / General Physics

created Nov 03, 2009 | popularity 4.5 / 5 (52) | comments 43

(PhysOrg.com) -- The first stars in the universe may have been very different from the stars we see today, yet they may hold clues to understanding some of the mysterious features of the universe. These "dark ...


Plague on their house, but bush rats fight back

Plague on their house, but bush rats fight back

Biology / Ecology

created Nov 03, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Sydney's native bush rats were unintended victims of a campaign to exterminate foreign black rats during a plague epidemic in 1900, according to new research by scientists who plan to reintroduce ...


Fermi telescope detects gamma-ray from 'star factories' in other galaxies

Fermi Telescope Detects Gamma-Ray From 'Star Factories' in Other Galaxies

Space & Earth / Astronomy

created Nov 02, 2009 | popularity 4 / 5 (2) | comments 0

Nearby galaxies undergoing a furious pace of star formation also emit lots of gamma rays, say astronomers using NASA's Fermi Gamma-ray Space Telescope. Two so-called "starburst" galaxies, plus a satellite ...


New celestial map gives directions for GPS

New Celestial Map Gives Directions for GPS

Space & Earth / Space Exploration

created Oct 29, 2009 | popularity 4.5 / 5 (4) | comments 0

(PhysOrg.com) -- Many of us have been rescued from unfamiliar territory by directions from a Global Positioning System (GPS) navigator. GPS satellites send signals to a receiver in your GPS navigator, which ...


Male Australian redback spiders employ courtship strategies to preserve their life

Biology / Plants & Animals

created Oct 22, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- New research shows that male suitors of a female cannibalistic spider risk facing a premature death unless they perform an adequate courtship lasting a minimum of 100 minutes. Further, the research shows ...


X-Ray Jets from Galaxies

X-Ray Jets from Galaxies

Space & Earth / Astronomy

created Oct 19, 2009 | popularity 4.5 / 5 (4) | comments 1

(PhysOrg.com) -- Some dramatic galaxies eject gigantic, collimated jets of ionized gas millions of light-years long, powered by the massive black holes at their centers. The ionized jets are detected at radio ...


IBM puts executive on leave after charges

Technology / Business

created Oct 19, 2009 | popularity not rated yet | comments 0

(AP) -- IBM Corp. has placed a top executive on leave after he was charged in an insider trading scandal for allegedly leaking secrets about IBM's earnings and financial dealings with corporate partners.


Chinese scientists create metamaterial black hole

Chinese scientists create metamaterial black hole

Physics / Optics & Photonics

created Oct 16, 2009 | popularity 4 / 5 (53) | comments 20

(PhysOrg.com) -- Two physicists in China have used metamaterials to create the first artificial electromagnetic black hole. The scientists, Qiang Cheng and Tie Jun Cui from the Southeast University in Nanjing, ...


Cosmic archaeology: Astrophysicists use new spectrographs to look far back into the history of the universe

Cosmic archaeology: Astrophysicists use new spectrographs to look far back into the history of the universe

Space & Earth / Astronomy

created Oct 13, 2009 | popularity 3.9 / 5 (11) | comments 2

(PhysOrg.com) -- The distant past of the universe is moving closer. Astronomers are using special spectrographs to investigate galaxies in the depths of the universe as part of the Sloan Digital Sky Survey ...


Sky merger yields sparkling dividends

Sky merger yields sparkling dividends

Space & Earth / Astronomy

created Oct 13, 2009 | popularity 4.7 / 5 (3) | comments 1

(PhysOrg.com) -- Not surprisingly, interacting galaxies have a dramatic effect on each other. Studies have revealed that as galaxies approach one another massive amounts of gas are pulled from each galaxy ...


Turbines on a wind far

AES wind farm kicks off in Bulgaria

Technology / Energy

created Oct 06, 2009 | popularity 3 / 5 (2) | comments 0

AES Geo Energy, a Bulgarian unit of US energy giant AES Corporation, launched on Tuesday the largest 156-megawatt wind farm in Bulgaria, the company said.


Black Holes Go 'Mano a Mano'

Black Holes Go 'Mano a Mano'

Space & Earth / Astronomy

created Oct 06, 2009 | popularity 4.3 / 5 (15) | comments 11

(PhysOrg.com) -- Two black holes in galaxy NGC 6240 are only 3,000 light years apart -- and getting closer.


Cosmic entropy could be 100 times greater than previously thought

Physics / General Physics

created Oct 06, 2009 | popularity 4.3 / 5 (20) | comments 11

(PhysOrg.com) -- A new analysis of supermassive black holes has discovered the entropy of the universe is much greater than previously thought, which means it may also be very slightly closer to ultimate heat death.


Black rat does not bother Mediterranean seabirds

Black rat does not bother Mediterranean seabirds

Biology / Ecology

created Oct 02, 2009 | popularity not rated yet | comments 0

Human activities have meant invasive species have been able to populate parts of the world to which they are not native and alter biodiversity there over thousands of years. Now, an international team of scientists ...


Racial Segregation Fuels Early Black-White Achievement Gap, Data Suggest

Other Sciences / Social Sciences

created Oct 01, 2009 | popularity 2.6 / 5 (5) | comments 4

Racial segregation of schools, and thereby segregated neighborhoods, appears to be a leading source of academic achievement disparities between young black and white children, according to research by sociologist Dennis J. ...