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Solar Activity Can Affect Re-Entry of UARS Satellite
September 23, 2011 — The Upper Atmosphere Research Satellite (UARS) is headed toward Earth, but it hasn't been easy to precisely determine the path and pace of UARS because space itself changes over time -- in response ... > full story -
Turbulent Lives of Stars
September 15, 2011 — The stars are boiling! This is because of the energy generated in the center of the star that wants to escape. If this does not happen quickly enough, the star starts to 'boil' in the outer layers ... > full story -
Space Instrument Observes New Characteristics of Solar Flares; Findings May Lead to Improved Space Weather Forecasting
September 7, 2011 — NASA's Solar Dynamics Observatory, which is carrying a suite of instruments, has provided scientists with new information that energy from some solar flares is stronger and lasts longer than ... > full storyMore: -
How a Distant Black Hole Devoured a Star
August 24, 2011 — Astronomers have provided new insights into a cosmic accident that has been streaming X-rays toward Earth since late March. NASA's Swift satellite first alerted astronomers to intense and unusual ... > full story -
New Method Detects Emerging Sunspots Deep Inside the Sun, Provides Warning of Dangerous Solar Flares
August 19, 2011 — Sunspots spawn solar flares that can cause billions of dollars in damage to satellites, communications networks and power grids. But researchers have now developed a way to detect incipient sunspots ... > full story -
New Images Reveal Structures of the Solar Wind as It Travels Toward and Impacts Earth
August 18, 2011 — Using data collected by NASA's STEREO spacecraft, researchers have developed the first detailed images of solar wind structures as plasma and other particles from a coronal mass ejection traveled 93 ... > full story -
Solar Flares: What Does It Take to Be X-Class? Sun Emits an X-Class Flare on August 9, 2011
August 9, 2011 — Solar flares are giant explosions on the sun that send energy, light and high speed particles into space. These flares are often associated with solar magnetic storms known as coronal mass ejections ... > full story -
Wave Power Can Drive Sun's Intense Heat
July 27, 2011 — A new study sheds light on why the sun's outer atmosphere, or corona, is more than 20 times hotter than its surface. The research may bring scientists a step closer to understanding the solar cycle ... > full storyMore: -
Exoplanet Aurora: An out-of-This-World Sight
July 21, 2011 — Earth's aurorae, or Northern and Southern Lights, provide a dazzling light show to people living in the polar regions. Shimmering curtains of green and red undulate across the sky like a living ... > full story -
New Ways to Measure Magnetism Around the Sun
July 14, 2011 — NASA researchers have made use of old mathematical techniques and new insights on how coronal mass ejections travel to devise a fresh way to measure this magnetic environment in the sun's upper ... > full story
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