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HEADLINE STORIES
  An international team of researchers has discovered a puzzling surplus of high-energy electrons bomb
Discovered: Cosmic Rays from a Mysterious, Nearby Object
An international team of researchers has discovered a puzzling surplus of high-energy electrons bombarding Earth from space. The source of these cosmic rays is unknown, but it must be close to the solar system and it could be made of dark matter.
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  A surge of new-cycle sunspots in October may signal the beginning of the end of the ongoing solar mi
Solar Cycle Update: The Sun Shows Signs of Life
A surge of new-cycle sunspots in October may signal the beginning of the end of the ongoing solar minimum.
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  Researchers have discovered 'magnetic portals' forming high above Earth that can briefly connect our
Magnetic Portals Connect Earth to the Sun
Researchers have discovered 'magnetic portals' forming high above Earth that can briefly connect our planet to the Sun. Not only are the portals common, one space physicist contends they form twice as often as anyone had previously imagined.
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  Gamma-ray bursts are by far the brightest and most powerful explosions in the Universe, second only
The Case of the Missing Gamma-ray Bursts
Gamma-ray bursts are by far the brightest and most powerful explosions in the Universe, second only to the Big Bang itself. So it might seem a bit surprising that a group of them has gone missing.
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  Cosmic explosions known as gamma-ray bursts are curiously picky about where they explode. Shunning s
The Oddball Hosts of Gamma-ray Bursts
Cosmic explosions known as gamma-ray bursts are curiously picky about where they explode. Shunning spiral galaxies like the Milky Way, gamma-ray bursts prefer to 'go off' in oddball star systems that astronomers are just beginning to understand.
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  A curiously short-lived type of gamma-ray burst has astronomers puzzled. Leading experts discuss th
Brief Mystery: What are Short Gamma-ray Bursts?
A curiously short-lived type of gamma-ray burst has astronomers puzzled. Leading experts discuss the clues at today's Gamma-ray Burst Symposium in Huntsville, Alabama.
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RECENT STORIES
  How Round is the Sun?
Scientists using NASA's RHESSI spacecraft have measured the roundness of the sun with unprecedented precision, and they find that it is not a perfect sphere. During years of high solar activity the sun develops a thin "cantaloupe skin" that significantly increases its apparent oblateness.
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  Spotless Sun: Blankest Year of the Space Age
Astronomers who count sunspots have announced that 2008 has become the "blankest year" of the Space Age. Sunspot counts are at a 50-year low, signifying a deep minimum in the 11-year cycle of solar activity.
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  Solar Wind Loses Power, Hits 50-year Low
In a briefing today at NASA headquarters, solar physicists announced that the solar wind is losing power. This development has repercussions across the solar system.
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Curator: John M. Horack
Last Updated: November 19, 2008
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