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Cassini Gets Close-Up Views of Large Hurricane on Saturn
NASA's Cassini spacecraft has provided scientists the first close-up, visible-light views of a behemoth hurricane swirling around Saturn's north pole.
In high-resolution pictures and video, sc ... more
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Giant Gas Cloud in System NGC 6240
Scientists have used Chandra to make a detailed study of an enormous cloud of hot gas enveloping two large, colliding galaxies. This unusually large reservoir of gas contains as much mass as 10 bill ... more
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Two New Exoplanets Detected with Kepler, SOPHIE and HARPS-N
An international team of astronomers, including Alexandre Santerne of the EXOEarths team at CAUP, has identified and characterized two new exoplanets thanks to combined observations from the Kepler ... more
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Bizarre binary star system pushes study of relativity to new limits
An international team of astronomers and an exotic pair of binary stars have proved that Albert Einstein's theory of relativity is still right, even in the most extreme conditions tested yet. The re ... more
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