The Dragon contained biological samples and Legos.
Dragon floating in the Pacific Ocean as it waits for recovery. Image: Michael Altenhofen/SpaceX/May 31, 2012
The capsule will stop in California before heading to Texas for remaining cargo unloading and processing.
Dragon is grappled by the space station's robotic arm. (NASA)
The mission culminated Saturday with the hatch opening of capsule Dragon.
The NASA/SpaceX COTS-2 launching. Image by NASA/Alan Ault/May 22, 2012
The first private cargo-carrying spacecraft to attempt reaching the International Space Station successfully began its journey Tuesday.
The Dragon space capsule at the SpaceX hangar in Cape Canaveral, Fla. Photo: Michael Rooks/SpaceX
Could Dragon be the next space shuttle?