Second STS-125 Spacewalk Complete

The second of five STS-125 spacewalks concluded at 4:45 p.m. EDT. It was 7 hours, 56-minutes, making it the 8th longest spacewalk in history. During the walk outside the shuttle, Massimino and Good removed and replaced three rate sensor units. One of the new upgraded units could not be seated into place. As a result, the spacewalkers installed a refurbished spare unit. The spacewalkers also replaced a new battery module from the telescope's Bay 2. More

(Source: NASA - May 16)