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Stories, updates, insights, and original analysis from The Planetary Society.

Mars Exploration Rover

The Mars Exploration Rovers Update: Spirit Powers into Winter, Opportunity "Shoulders" Injury

With winter settling in on the southern hemisphere of the Red Planet, the Mars Exploration Rovers (MERs) spent April working on their respective science campaigns and hunkering down in brutally chilly nights that are seeing temperatures drop to around -95 degree Celsius. As the month comes to an end at Gusev Crater and Meridiani Planum, there is good news and there is bad news.

Dawn in survey orbit at Ceres

Dawn Journal: Software Updates

Dawn continues its powered flight, having accumulated more than 100 days of ion thrusting since its launch nearly seven months ago. All systems are healthy as the probe patiently and persistently propels itself through the solar system.

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