The crew of STS-135 are now on the homestretch of their mission. At 2:28 a.m. EDT Tuesday, space shuttle Atlantis undocked from the International Space Station while the spacecraft were 243 miles above the Pacific. Atlantis spent eight days, 15 hours and 21 minutes docked to the ISS.
Atlantis is scheduled to make its first attempt to land at NASA’s Kennedy Space Center on Thursday, July 21, at 5:56 a.m. EDT.