News tagged with atmospheric turbulence

Subaru telescope pioneers the use of adaptive optics for optical observations

A research team from the University of Tokyo/Kavli IPMU, Ehime University, and the National Astronomical Observatory of Japan (NAOJ) has succeeded in conducting the first, full-scale scientific observationswith ...

Space & Earth / Astronomy

created May 25, 2012 | popularity 5 / 5 (1) | comments 0

Stellar winds

(PhysOrg.com) -- The Sun, glowing with a surface temperature of about 5500 degrees Celsius, warms the Earth with its salutary light. Meanwhile the Sun's hot outer layer (the corona), with its temperature of ...

Space & Earth / Astronomy

created Oct 10, 2011 | popularity 5 / 5 (2) | comments 7 | with audio podcast

STAR TRAK for October

As the short nights of summer give way to the longer nights of autumn in the Northern Hemisphere, Jupiter will come into view above the southeastern horizon as the sun sets. The huge planet will be much brighter ...

Space & Earth / Space Exploration

created Oct 04, 2011 | popularity 5 / 5 (1) | comments 10

A guide star lets scientists see deep into human tissue

Astronomers have a neat trick they sometimes use to compensate for the turbulence of the atmosphere that blurs images made by ground-based telescopes. They create an artificial star called a guide star and ...

Physics / Optics & Photonics

created Feb 11, 2011 | popularity 4.9 / 5 (25) | comments 10 | with audio podcast

To better understand the early universe, adaptive optics technique invented

Adaptive optics makes it possible to remove distortions caused by turbulence in the atmosphere when observing the sky. A major innovation in this field has been achieved by a Franco-British team, including ...

Space & Earth / Astronomy

created Jan 17, 2011 | popularity 5 / 5 (5) | comments 1

STAR TRAK for January 2011

As the new year begins, Jupiter will be the only planet visible after sunset, about halfway up the sky in the south-southwest. It will dominate the evening sky as the brightest object in view. January will ...

Space & Earth / Space Exploration

created Jan 04, 2011 | popularity 5 / 5 (1) | comments 0

Taking the twinkle out of the night sky

If you are like most people, you probably enjoy the twinkling of stars that blanket the sky on a clear summer night. If you are an astronomer, chances are you find it extremely annoying.

Physics / General Physics

created Aug 04, 2010 | popularity 4.8 / 5 (11) | comments 6 | with audio podcast

AOptix Technologies and NuCrypt demonstrate physical-layer quantum encryption

AOptix Technologies, a leading edge developer of ultra-high bandwidth laser communication solutions, and NuCrypt, a provider of technology for ultra-high security over optical communication networks, disclosed today the recent ...

Physics / General Physics

created Dec 14, 2009 | popularity 4.2 / 5 (5) | comments 0

STAR TRAK for November: Mars is prominent again

(PhysOrg.com) -- Pumpkin-colored Mars will return to prominence during November, rising shortly before midnight at the beginning of the month and more than two hours earlier by month's end. The orange planet ...

Space & Earth / Space Exploration

created Nov 02, 2009 | popularity 4 / 5 (2) | comments 0

Astronomers find coldest, driest, calmest place on Earth

The search for the best observatory site in the world has lead to the discovery of what is thought to be the coldest, driest, calmest place on Earth. No human is thought to have ever been there but it is expected to yield ...

Space & Earth / Earth Sciences

created Aug 31, 2009 | popularity 4.6 / 5 (46) | comments 19

Study compares sound from exploding volcanoes with jet engines

New research on infrasound from volcanic eruptions shows an unexpected connection with jet engines. Researchers at Scripps Institution of Oceanography at UC San Diego speeded up the recorded sounds from two ...

Space & Earth / Earth Sciences

created Apr 08, 2009 | popularity 3.8 / 5 (5) | comments 0

Watching Venus glow in the dark

(PhysOrg.com) -- ESA’s Venus Express spacecraft has observed an eerie glow in the night-time atmosphere of Venus. This infrared light comes from nitric oxide and is showing scientists that the atmosphere of ...

Space & Earth / Space Exploration

created Feb 24, 2009 | popularity 4.3 / 5 (6) | comments 0

LLNL signs agreement with Siemens to improve wind energy efficiency

Lawrence Livermore National Laboratory has signed an agreement with Siemens Energy Inc. to provide high-resolution atmospheric modeling capabilities to improve the efficiency of wind farm sites, turbine design and wind farm ...

Technology / Engineering

created Feb 24, 2009 | popularity 5 / 5 (1) | comments 1