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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
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ScienceShot: Impostors in the Orion Nebula?
21 September 2012 12:31 pm
The Orion Nebula, 1350 light-years from Earth, appears to the naked eye as a fuzzy star in the sword of Orion. The nebula is spawning stars large and small, so observers often study it to learn about star birth. Now, however, astronomers say that at least 10% to 20% of the thousands of stars ascribed to the 1-million-year-old Orion Nebula cluster actually belong to the Iota Orionis cluster, which lies just in front of the Orion Nebula and is four to five times older. The finding means astronomers must revisit earlier conclusions about young stars, the researchers write in a future issue of Astronomy & Astrophysics. For example, planet-forming disks tend to disperse with time, so if some of the Orion stars are older than thought, a greater percentage of the youngest ones sport protoplanetary disks. And that means there could be an even greater abundance of strange new worlds for astronomers to discover.
See more ScienceShots.