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Fire vs. Ice: The Science of ISON at Perihelion
After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion. Would the comet disintegrate in the fierc ... more
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Scientist: Near-miss solar storm should be a wake-up call
A massive solar storm that narrowly missed Earth last year should open the eyes of policymakers to the threat of severe space weather, a U.S. scientist says. ... more
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Feature of Earth's atmosphere may help in search for habitable planets
An atmospheric peculiarity on Earth is likely common to billions of planets, a finding that may help identify potentially habitable worlds, U.S. scientists say. ... more
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Collapse of the universe is closer than ever before
Maybe it happens tomorrow. Maybe in a billion years. Physicists have long predicted that the universe may one day collapse, and that everything in it will be compressed to a small hard ball. New cal ... more
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