Astronomers using data from NASA's Fermi Gamma-ray Space Telescope have made the most accurate measurement of starlight in the universe and used it to establish the total amount of light from all of the stars that have ever shone, accomplishing a primary mission goal.
Those who watch the sun are regularly treated to brilliant shows – dancing loops of solar material rise up, dark magnetic regions called sunspots twist across the surface, and dazzling flares of light and radiation explode into space. But there are smaller, barely visible events, too: much smaller and more frequent eruptions called nanoflares. Depending on how many and how energetic these are, nanoflares may be the missing piece of the puzzle to help understand what seeds the cascade that causes a much bigger flare, or to explain how the sun transfers so much energy to its atmosphere that it's actually hotter than the surface.
Justin Crepp, Freimann Assistant Professor of physics at the University of Notre Dame, provided the high-contrast imaging observations that confirmed the first extrasolar planet discovered in a quadruple star system. He is a co-author on a paper about the discovery, “Planet Hunters: A Transiting Circumbinary Planet in a Quadruple Star System,” recently posted to the open-access arXiv.org, and submitted for publication to The Astrophysical Journal.
Organisers, Xmark Media reports on the success of this year’s event and announces the dates for 2013.
Photovoltaic cell efficiency may soon get a big boost, thanks to next-generation antireflection coatings crafted from nanomaterials capable of cutting down on the amount of light reflected away from a cell's surface.
The heat-seeking capabilities of the international Cassini spacecraft and two ground-based telescopes have provided the first look at the aftermath of Saturn's 'Great Springtime Storm'. Concealed from the naked eye, a giant oval vortex is persisting long after the visible effects of the storm subsided.
Wim Leemans of Berkeley Lab's Accelerator and Fusion Research Division heads LOASIS, the Laser and Optical Accelerator Systems Integrated Studies, an oasis indeed for students pursuing graduate studies in laser plasma acceleration (LPA). Among the most promising applications of future table-top accelerators are new kinds of light sources, in which their electron beams power free electron lasers.
NASA's Cassini spacecraft has tracked the aftermath of a rare massive storm on Saturn. Data reveal record-setting disturbances in the planet's upper atmosphere long after the visible signs of the storm abated, in addition to an indication the storm was more forceful than scientists previously thought.
Raytheon Company has successfully demonstrated the enhanced capabilities of its new CSP HD turret, a high definition electro-optical and infrared version of its Common Sensor Payload (CSP). The initial CSP HD system flight test occurred on a U.S. Army Gray Eagle UAS (unmanned aircraft system) platform in September.
NASA's newest set of X-ray eyes in the sky, the Nuclear Spectroscopic Telescope Array (NuSTAR), has caught its first look at the giant black hole parked at the center of our galaxy. The observations show the typically mild-mannered black hole during the middle of a flare-up.
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