To be broadcast next summer, the show is about a female astronaut trying to reconnect with her family when she returns after a year in outer space.
No casting has been announced yet.
"'Extant' is a very original concept with layers of humanity, mystery and surprise that reveal itself throughout the script," Nina Tassler, president of CBS Entertainment, said in a statement Wednesday. "Our partnership with Amblin for 'Under the Dome' showed that viewers respond to high-quality event programming in the summer. We look forward to building on that with 'Extant' and offering CBS audiences another high-concept, unique event for summer television."
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