Why finding phosphine on Venus has astronomers so excited

Most of the popular talk about life in outer space has centered on Mars. That is, until a few days ago, when astronomers reported an exciting discover on Venus. So, what did they find? Why is it a sign of life? What could life on Venus even look like? And why haven't we checked there until now? Dr. Eric Jensen, Professor of Astronomy at Swarthmore College joins KYW In Depth for a fascinating conversation about aliens, outer space, and why Venus is suddenly the hottest planet in the solar system. See omnystudio.com/policies/listener for privacy information.

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