Stewart David Nozette pleaded that he was not guilty, when he was produced before a court here on Thursday, Oct 30.
The judge Deborah Robinson denied his bail application arguing that he was being considered as a flight risk and should remain in jail awaiting trial.
Nozette was also arrested on charges of selling classified US defence documents to an Israeli agent for $2 million.
Nozette had served 16 years in sensitive position in various wings of the federal government including the White House, NASA and Energy Department.
He also assisted in the development of the Clementine bi-static radar experiment which purportedly discovered water ice on the south pole of the moon.