The docking came above China and Mongolia as the ISS was traveling at 17,000 mph. It docked 19 hours after the historic launch with NASA astronauts from the Kennedy Space Center.
With astronauts Doug Hurley and Bob Behnken strapped inside the capsule and the countdown narrowing, poor weather conditions forced an abort. The next opportunity to try will be on Saturday.
When Doug Hurley launched aboard Atlantis on July 8, 2011, the future of human spaceflight from U.S. soil was uncertain. Nearly a decade later, the astronaut is piloting SpaceX's new Crew Dragon.
NASA and SpaceX plan to launch astronauts to the International Space Station on Wednesday. It'll be the first time a new kind of spacecraft has launched astronauts into orbit since the space shuttle.
After a flawless launch from Cape Canaveral, Fla., the crew capsule, loaded with 600 pounds of cargo for the station, was unable to reach its intended orbit, Boeing says.