NASA has tweaked the path of its Mars Science Laboratory (MSL) in preparation for the planned Aug. 6 landing of the car-sized rover in a crater near the Martian equator. Controllers at the Jet Propulsion Laboratory fired thrusters on MSL twice for a total of 6 sec. at 1 a.m. EDT July 29. The thruster burn was designed to nudge it west of its projected entry point into the planet’s atmosphere by 21 km (13 mi.), after tracking with Deep Space Network antennas indicated it was that far off ...


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