Third STS-125 Spacewalk Complete

The third of five STS-125 spacewalks concluded Saturday at 4:11 p.m. EDT. It lasted 6 hours, 36 minutes. During the endeavor outside the shuttle, Feustel and Grunsfeld removed the Corrective Optics Space Telescope Axial Replacement and installed in its place the new Cosmic Origins Spectrograph. They also completed the Advanced Camera for Surveys electronic card replacement work. The spacewalkers were ahead of schedule and were able to complete part 2 of the ACS repair, installing a new electronics box and cable. More

(Source: NASA - May 17)