- News Home
17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
- About Us
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.