Interstellar winds that blow through the solar system have changed direction by 4 to 9 degrees, according to a study by NASA researchers, who examined data collected by 11 spacecraft between 1972 and 2011. Scientists had long believed that the winds gusted in a steady direction. "Previously we thought the very local interstellar medium was very constant, but these results show just how dynamic the solar system's interaction is," said study co-author Dave McComas, lead investigator for NASA's Interstellar Boundary Explorer.

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