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27 November 2013 12:59 pm ,
Vol. 342 ,
The new head of the National Center for Science Education promises to "fight the good fight" against attacks on...
Analyses of the H7N9 strains isolated from four new cases show that the virus is evolving rapidly, heightening anxiety...
In 2009, Jack Szostak shared a Nobel Prize for his part in discovering the role of telomeres, the end bits of...
Science has exposed a thriving academic black market in China involving shady agencies, corrupt scientists, and...
Paper-selling agencies flourish in the aura of reputable businesses. For some scientists, it may be difficult to tell...
Featuring the first lunar rover in 40 years, Chang'e-3 is seen as an important milestone on China's quest to send a...
Data collected by satellites and floating probes have chronicled a 2-decade rise in the temperature and thickness of a...
Cholesterol, the artery-clogging molecule that contributes to cardiovascular disease, has another nasty trick up its...
- 27 November 2013 12:59 pm , Vol. 342 , #6162
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ScienceShot: A Dusty Starburst Near the Edge of the Universe
13 June 2012 1:00 pm
For more than a decade, a galaxy named HDF 850.1 has perplexed astronomers. At the far-infrared wavelength of 850 microns, this galaxy is the brightest object in the Hubble Deep Field, a long exposure the Hubble Space Telescope took in December 1995 (left image). But at optical wavelengths, HDF 850.1 (right image) is invisible; no one even knew how far it was from Earth. Today, astronomers report online in Nature the first detection of HDF 850.1's redshift—a measure of its distance—at radio wavelengths. The redshift is 5.183 and means the galaxy is 12.6 billion light-years away, so we see it just 1.1 billion years after the big bang. HDF 850.1 is a "starburst," spawning stars hundreds of times more intensely than the Milky Way, but the galaxy is so shrouded in dust that not even hawk-eyed Hubble can glimpse the light of its many newborn stars.
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