(CNN)NASA's Curiosity rover just conquered a major milestone on Mars -- and it took a selfie to celebrate the feat. Curiosity recently finished a record-setting climb by rolling up its steepest hill to date. It's called Greenheugh Pediment and the challenging hill created a 31-degree tilt for ...from Latest News on One News Page - Top Headlines and News Videos https://ift.tt/2y9Vzxz
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