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HEADLINE STORIES
  It might not be obvious to the naked eye, but the sun is a variable star.  A sensor slated for launc
The Sun's Sneaky Variability
It might not be obvious to the naked eye, but the sun is a variable star. A sensor slated for launch onboard the Solar Dynamics Observatory will probe the sun's "sneaky variability" with better time and spectral resolution than ever before.
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  NASA's IBEX spacecraft has discovered a vast and mysterious ribbon at the edge of the solar system.
Giant Ribbon Discovered at the Edge of the Solar System
NASA's IBEX spacecraft has discovered a vast, glowing ribbon at the edge of the solar system. One mission scientist calls the discovery "shocking" and says theorists are "working like crazy" to explain the finding.
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  NASA spacecraft are measuring record-high levels of cosmic rays--a side-effect of the deepest solar
Cosmic Rays Hit Space Age High
NASA spacecraft are measuring record-high levels of cosmic rays--a side-effect of the deepest solar minimum in nearly a century. This development could have implications for the amount of shielding astronauts need to take when they explore deep space.
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  The sun is in the pits of the deepest solar minimum in nearly a century. Weeks and sometimes whole m
Are Sunspots Disappearing?
The sun is in the pits of the deepest solar minimum in a century. Weeks and sometimes whole months go by without even a single tiny sunspot. The quiet has prompted some observers to wonder, are sunspots disappearing?
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  NASA is planning a daring new mission to investigate the Universe's favorite way of making things ex
Honey, I Blew Up the Tokamak
NASA is planning a daring new mission to investigate the Universe's favorite way of making things explode. Unlocking the secrets of "magnetic reconnection" could help alleviate the energy crisis on Earth.
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  Two weeks after something slammed into Jupiter, creating a cloud of debris that is still easy to see
What Hit Jupiter?
Two weeks after something slammed into Jupiter, creating a cloud of debris that is still easy to see through backyard telescopes, researchers are wondering ... what was the impactor?
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RECENT STORIES
  Fake Astronaut Gets Hit by Artificial Solar Flare
Researchers are about to subject a fake astronaut complete with blood cells and simulated human tissue to an artificial solar flare. How the unlucky volunteer emerges from the radiation storm will reveal for the first time how much of a threat severe solar flares pose to astronauts en route to the Moon and Mars.
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  New Solar Cycle Prediction
An international panel of experts has issued a new prediction for the solar cycle which takes into account the surprisingly deep solar minimum of 2008-2009. Read today's story to find out when they think solar maximum will return.
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  New Gamma-Ray Burst Smashes Cosmic Distance Record
A gamma-ray burst detected by NASA's Swift satellite has smashed the previous distance record for the most powerful explosions in the Universe. Researchers are calling it 'an incredible find' and a 'true blast from the past.'
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Curator: John M. Horack
Last Updated: October 27, 2009
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