CAPE CANAVERAL, Fla.—A NASA rover streaked toward a landing on Mars on Thursday in the riskiest step yet in an epic quest to bring back rocks that could answer whether life ever existed on the red planet.
In this illustration provided by NASA, the Perseverance rover fires up its descent stage engines as it nears the Martian surface. This phase of its entry, descent and landing sequence, or EDL, is known as "powered descent." NASA/JPL-Caltech via AP
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