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Vote Now! Best Space Stories of the Week - March 24, 2013

Why Voyager 1's Solar System Exit Is So Hard to Predict

NASA/JPL-Caltech/The Johns Hopkins University Applied Physics Laboratory

NASA's Voyager 1 probe is tantalizingly close to the edge of the solar system, but predicting when it will finally pop free into interstellar space is a challenging proposition, mission team members say. [Full Story]

NEXT: Slumbering Sun Wakes Up This Year

Slumbering Sun Should Wake Up This Year

NASA/SDO

The sun should roar back to life sometime in 2013, producing its second activity peak in the last two years, scientists say. [Full Story]

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