A mighty dust storm swirled around the Opportunity rover on June 10, 2018, forcing the robot to shut itself off and conserve power. The dust blocked out nearly all the sunlight, turning day to night. 

Opportunity would never awake. On Wednesday, NASA announced that they would no longer attempt to revive the 15-year-old machine, formally ending the legendary extraterrestrial mission. 

But on that dark June day, just before Opportunity went silent, the rover took

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