SPACE Comet Punch Threw Mars’ Magnetism into Chaos
When Comet C/2013 A1 (Siding Spring) swung past the Red Planet in October 2014, it was an unprecedented opportunity for an armada of Mars robots to have a ringside seat of the interplanetary spectacle. But as dazzling as the flyby was, the real drama wasn’t seen by the cameras of Mars orbiters or rovers; it was detected by a magnetometer. And that magnetometer, located 100 miles above the Martian surface, detected chaos.
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