Life on Mars

Curiosity Rover selfie

‘The Sirens of Mars’: A scientist’s personal journey and the rich history of Mars exploration

Astrobiologist Sarah Stewart Johnson is a NASA scientist who has spent her career searching for answers to profound human questions. She helped design America’s newest interplanetary, robotic life hunter on Mars called Perseverance, which launched on July 30.

NASA: Liquid water may flow on Mars

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The World

Tracy K. Smith: Life on Mars

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