The much-loved astronomer and science communicator Carl Sagan once recorded a message for the future astronauts who will one day set foot on Mars. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Sagan was a big advocate for the exploration of the Red Planet. Co-founder of The Planetary Society, he believed we should go to the planet to study it as an analog for our own planet, to search for potential signs of life, and simply because of the romance of exploring Mars.

In 1996, shortly before he died of pneumonia on December 20, Sagan recorded a message for future astronauts who have made it to Mars.

"I'm Carl Sagan. This is a place where I often work in Ithaca, New York, near Cornell University. Maybe you can hear, in the backgr

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