SpaceX rocket Falcon 9 at Cape Canaveral in Florida was scheduled to launch Saturday morning, but aborted just before liftoff. Roberto Gonzalez/Getty Images hide caption

itoggle caption Roberto Gonzalez/Getty Images

More than a million people were expected in the area around the Kennedy Space Center to watch the launch. Many arrived before sunrise to claim the best seats. Scott Cameron/NPR hide caption

itoggle caption Scott Cameron/NPR

Food packets containing the astronauts' "all-American meal," including (clockwise from top left) corn, chicken, brisket, and beans, along with a lemonade, at right. Devin Boldt/NASA - JSC hide caption

itoggle caption Devin Boldt/NASA - JSC

Astronaut Steve Bowen works outside the International Space Station's Quest airlock during Monday's spacewalk. Bowen's spacewalk was unexpectedly extended by a computer malfunction. NASA TV hide caption

itoggle caption NASA TV