Rocco Petrone Rocketman

Petrone recommended against the launch of the shuttle Challenger on Jan. 28, 1986. His recommendation was ignored.

From This is True for 27 August 2006

Ronald F. Scott Down and dirty

Scott was able to assure the Apollo astronauts that the moon would support their weight.

From This is True for 21 August 2005

William H. Pickering Rocket scientist

Pickering was the founding director of NASA’s Jet Propulsion Laboratory — and was given the choice of what it would concentrate on for NASA.

From This is True for 14 March 2004