Senator Barbara Mikulski examines one of the training power tools used by astronauts to prepare for the five space walks that took place during the fifth and final servicing mission to the Hubble Space Telescope during the STS-125 mission. Dr. Ed Weiler (near right) is the Associate Administrator for the Science Mission Directorate at NASA Headquarters. Astronaut Paul Richards (far right) helped design some of the power tools used by the STS-125 crew.
Credit: NASA/Pat Izzo
