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5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
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,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: She Just Lights Up
29 November 2011 4:48 pm
The great Andromeda Galaxy owes a bit of its beauty to a dalliance with another galaxy billions of years ago, according to new data gathered with NASA's orbiting Hubble Space Telescope. Lying 2.5 million light-years from Earth, the Andromeda Galaxy is the closest giant spiral to our own and the largest member of the Local Group, the collection of several dozen nearby galaxies that includes our Milky Way, which ranks number second largest. The new observations reveal that Andromeda—shown here in infrared (yellow and orange) and x-rays (blue and white)—experienced a rash of star formation in its outermost disk 1.5 to 3 billion years ago, as reported in a paper in press at Monthly Notices of the Royal Astronomical Society. The likely trigger? Spiral galaxy M33—the Local Group's third largest galaxy, 2.8 million light-years from us—which swung by Andromeda at the time and experienced its own starburst, suggesting each galaxy's gravity caused gas in the other to collapse and create new stars.
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