“In almost half of the cases, the databases could not clearly say what we had in our hands,” said researchers studying rocks from the Atacama Desert in Chile.
— will be hauled back to Earth sometime early in the next decade for scrutiny in high-containment laboratories.
Since the Viking mission, NASA has followed a more incremental strategy focused on finding and exploring sites that show evidence of being potentially habitable billions of years ago, when Mars was warmer and wetter. Perseverance and its still active predecessor, the Curiosity rover, have found “This means that organics detection with spaceflight instruments, like on current and future Mars rovers, may be an even larger challenge, as organic matter is readily broken down in the radiation-bathed Martian surface environment,” Williams said in an email.
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