Astronauts complete spacewalk outside space station

Two NASA astronauts conducted a spacewalk to replace lithium ion batteries outside of the International Space Station on Friday with only a minor snafu -- the loss of a mirror. Astronauts Chris Cassidy and Robert Behnken began the spacewalk at 7:32 a.m. EDT and were back safely inside the ISS just over 6 hours later. More

(Source: UPI.com - Jun 27)