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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Quasar Caught Dining on a Galaxy
28 June 2010 5:34 pm
Humbling as it seems, even whole galaxies can be ripped apart—as is the one in the red area near the center of this image. The culprit? A quasar (yellow), a galaxy with a supermassive black hole at its center that creates so much radiation it outshines everything else in the universe. Until now, astronomers have had a hard time getting much of a look at these cosmic beacons, because their light obscures everything around them. But this quasar, known as SDSS J0123+00, is obscured by a thick doughnut of dust called a torus (inset). That's allowed astronomers to sneak a peak at the beast as it rips away giant clouds of gas (green) from a nearby galaxy. The finding, reported in an upcoming issue of the Monthly Notices of the Royal Astronomy Society, confirms a long-held theory about quasars: They power their intense luminescence by dining on the gas of other galaxies.
See more ScienceShots.