Pioneer Venus

Solar System

Did Pioneer Venus Find Phosphine First?

NASA's Pioneer Venus mission, which launched in 1978, found the first tantalizing clues of phosphine, a potential biosignature gas — but it took 40 years to realize it!

EnVision Orbiter

Astrobiology

Race to Venus: How We’ll Verify Phosphine

Confirming phosphine's presence on Venus is difficult from Earth . . . and that makes a good case for a mission to our sister planet.

Gibbous Venus from Akatsuki

Astrobiology

Potential Biosignature Found in Venus’s Clouds

Astronomers might have found a potential indication of life in the clouds of Venus.

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