NEW YORK — CBS says it’s renewing “The Big Bang Theory” for three more years.

The extraordinary three-year deal would carry TV’s most-watched sitcom through the 2016-17 season, the series’ 10th.

The show premiered in September 2007 and has been a ratings smash for its entire run. It has averaged nearly 20 million viewers a week this season.

A comedy about science nerds and the people who love them, it stars three-time Emmy-winner Jim Parsons as well as Johnny Galecki and Kaley Cuoco-Sweeting.

It airs at 8 p.m. Thursdays.

– From news service reports

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