Selected as an astronaut candidate by NASA in July 2000, Antonelli served in various technical assignments until his assignment to a mission. He served as pilot on the
STS-119 mission which launched on March 15, 2009. The flight delivered the final pair of power-generating solar array wings and truss element to the
International Space Station. Antonelli was assigned as pilot on the
STS-132 mission, launched on May 14, 2010. The mission saw the delivery of the Russian
Mini-Research Module 1 (MRM-1) to the
International Space Station. ==Awards and honors==