A Maryland scientist who once worked in the White House and at NASA has been sentenced to 13 years in prison for attempting to provide Israel classified information on satellites and early-warning defense systems.

Stewart Nozette pleaded guilty in September and was sentenced Wednesday in federal court in Washington. He was arrested in October 2009 after authorities say he provided an undercover FBI agent posing as an Israeli intelligence officer with some of the nation’s most guarded secrets for $11,000. The Chevy Chase resident held security clearance as high as “top secret” for nearly 20 years as he helped develop satellite and other advanced technology for the U.S. military.