Some stars go ballistic, racing through interstellar space like bullets and tearing through clouds of gas.
The frequency of extremely high clouds in Earth's tropics -- the type associated with severe storms and rainfall -- is increasing as a result of global warming, according to new study.
NASA's Hubble Space Telescope has discovered carbon dioxide in the atmosphere of a planet orbiting another star.
Scientists continue to search for the cause of the geysers on Saturn's moon Enceladus
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