John Daniel "Danny" Olivas (born May 25, 1966 in North Hollywood, California)[1] is an American engineer and a former NASA astronaut.

From 2002 to 2005 he was assigned to the EVA Branch and supported the research effort focused on developing materials, tools and techniques to perform on-orbit shuttle repair.

STS-117 returned to land at Edwards Air Force Base, California, having traveled more than 5.8 million miles in 13 days, 20 hours and 20 minutes.

The mission included three spacewalks to remove and replace a materials processing experiment outside ESA's Columbus module and return an empty ammonia tank assembly.

[10] This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.