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5 December 2013 11:26 am ,
Vol. 342 ,
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...
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...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: Stars in Cluster Buzzing Past Their Youth
3 June 2010 2:34 pm
Just like aging hippies, the stars in cluster NGC 3603 won't settle down, astronomers found when they compared images of the cluster taken by the Hubble Space Telescope's Wide Field and Planetary Camera 2 in 2007 with images taken 10 years earlier. NGC 3603, located about 20,000 light-years away in the southern constellation Carina, formed from a giant cloud of gas and dust about 1 million years ago. The full cluster is teeming, with 10,000 stars packed in an area of about 3 light-years square--less than the distance between the sun and its nearest neighbor, Proxima Centauri. Despite the crowding, astronomers had expected NGC 3603's constituent stars to have slowed to a relatively leisurely pace within the cluster. Eventually, they thought, the cluster would settle into a spherical and stable globular cluster. Instead, they report in The Astrophysical Journal Letters, the stars are moving around over twice as fast as expected. Their analyses suggest that astronomers still have some refining to do in their models of how such clusters evolve.