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5 December 2013 11:26 am ,
Vol. 342 ,
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: You Are Here; A Black Hole Is There
8 August 2012 2:45 pm
Researchers today released the largest three-dimensional map of black holes and massive galaxies yet produced, which pinpoints the locations and distances to more than 1 million galaxies. Most of those galaxies, each of which contains more than 100 billion stars, lie between 1 billion and 6 billion light-years from Earth. Mapping them will enable scientists to retrace the history of the universe for the last 6 billion years, the team says, thereby allowing astronomers to make better estimates for how much of it is composed of the "dark matter" that can’t be directly seen, and "dark energy," the mysterious force that’s driving the expansion of the universe. The survey, which recently completed its second year, has so far covered about 8% of the sky. By the time the 6-year project is completed, researchers will have mapped all massive galaxies outside of the dust-clogged plane of our Milky Way galaxy that are visible from the Northern Hemisphere—altogether, about one-fourth of the sky that’s visible from Earth.
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