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05.03.2017 Viewed: 105
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FOR THE FIRST TIME, RESEARCHERS CAN GENETICALLY MODIFY HUMAN EMBRYOS
04.03.2017 Viewed: 114
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THE JAMES WEBB SPACE TELESCOPE WILL UTTERLY TRANSFORM OUR VIEW OF THE UNIVERSE
04.03.2017 Viewed: 95
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'WOMEN OF NASA' LEGO SET: Q&A WITH CREATOR MAIA WEINSTOCK
04.03.2017 Viewed: 113
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FACEBOOK'S ARTIFICIAL INTELLIGENCE CAN NOW IDENTIFY SUICIDAL BEHAVIOR
03.03.2017 Viewed: 80
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WILL SPACEX'S MOON TOURISTS SURVIVE THE TRIP ACROSS THE COSMOS?
03.03.2017 Viewed: 120
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STRANGE NEW NEBULA IS MISSING ITS LIGHT SOURCE
The discovery of a new and rarely seen nebula 10 billion light-years away has created a cosmic mystery: What is lighting up this dusty cloud of gases?

Researchers led by Zheng Cai, a postdoctoral fellow at the University of California, Santa Cruz, have discovered an "enormous Lyman-alpha nebula," or ELAN, only the third of these vast cosmic structures ever seen. A nebula is an interstellar cloud of gases and dust; an ELAN is a special kind of nebula, so named because it emits Lyman-alpha radiation — a particular wavelength of light emitted when the electron in a
hydrogen atom drops down to its lowest energy level.

The two other ELANS previously discovered are nicknamed the Slug Nebula (for UC Santa Cruz's idiosyncratic mascot) and the Jackpot Nebula (because it contains a whopping four quasars, extremely bright objects created by particles accelerating away from black holes). But the new ELAN is a head-scratcher. The Slug and the Jackpot have bright quasars illuminating their dust and gases, but the light source inside the newfound ELAN is a mystery. [Photos: The 12 Strangest Places on Earth]

"What's really odd here, and one of the hooks of the story, is there's nothing," said Jason X Prochaska, a professor of astronomy and astrophysics at UC Santa Cruz and one of the authors of the paper reporting the new nebula, available on the physics preprint website ArXiv. "There's the faint smudge of a galaxy, probably, but no quasar shining toward us.
03.03.2017 Viewed: 120
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THE ISS IS GETTING ITS FIRST AFRICAN-AMERICAN CREW MEMBER IN 2018
03.03.2017 Viewed: 92
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ONE MAN IS RAISING $100 BILLION TO BUILD COMPUTER CHIPS WITH AN IQ OF 10,000
03.03.2017 Viewed: 98
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EARTH'S MANTLE IS MORE THAN 100 DEGREES F HOTTER THAN SCIENTISTS THOUGHT
02.03.2017 Viewed: 105
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THEIR HEARTS WERE IN IT: ONE RENAISSANCE COUPLE'S FINAL GESTURE



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