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  Cassini Sheds Light on Cosmic Particle Accelerators

  February 19, 2013 — During a chance encounter with what appears to be an unusually strong blast of solar wind at Saturn, NASA's Cassini spacecraft detected particles being accelerated to ultra-high energies. This is ... > full story
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  Year Three: NASA's Solar Dynamics Observatory Mission Highlights

  February 12, 2013 — On Feb. 11, 2010, NASA launched an unprecedented solar observatory into space. NASA's Solar Dynamics Observatory (SDO) flew up on an Atlas V rocket, carrying instruments that scientists hoped would ... > full story
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  New 'Retention Model' Explains Enigmatic Ribbon at Edge of Solar System

  February 5, 2013 — Since its Oct. 2008 launch, NASA's Interstellar Boundary Explorer has provided images of the invisible interactions between our home in the galaxy and interstellar space. Particles emanating from ... > full story

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  • Enigmatic 'Ribbon' of Energy Discovered by NASA Satellite Explained
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  Light Shone on Star Mystery: Why Sun's Corona Is Much Hotter Than Its Surface

  February 4, 2013 — Scientists have begun to unlock the mystery of why the outer edge of the Sun is much hotter than its surface for the first ... > full story
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  Inside a Solar Eruption: NASA's SDO Provides First Sightings of How a Coronal Mass Ejection Forms

  February 1, 2013 — On July 18, 2012, a fairly small explosion of light burst off the lower right limb of the sun. Such flares often come with an associated eruption of solar material, known as a coronal mass ejection ... > full story
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  Space Instrument Adds Big Piece to Solar Corona Puzzle

  January 23, 2013 — How can the solar atmosphere get hotter, rather than colder, the farther you go from the sun's surface? This mystery has puzzled solar astronomers for decades. A suborbital rocket mission that ... > full story
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  NASA's IRIS Spacecraft Is Fully Integrated

  January 22, 2013 — NASA's next Small Explorer (SMEX) mission to study the little-understood lower levels of the sun's atmosphere has been fully integrated and final testing is ... > full story
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  Did an 8th Century Gamma Ray Burst Irradiate Earth?

  January 21, 2013 — A nearby short duration gamma-ray burst may be the cause of an intense blast of high-energy radiation that hit the Earth in the 8th century, according to new ... > full story
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  New Evidence Indicates Auroras Occur Outside Our Solar System

  January 21, 2013 — Planetary scientists have found new evidence suggesting auroras – similar to Earth’s Aurora Borealis - occur on bodies outside our solar ... > full story
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  New Sunspots Producing Space Weather

  January 14, 2013 — On Jan. 13, 2013, at 2:24 a.m. EST, the sun erupted with an Earth-directed coronal mass ejection or CME. Not to be confused with a solar flare, a CME is a solar phenomenon that can send solar ... > full story

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