A Crew Dragon spaceship built and owned by SpaceX glided to an automated docking with the International Space Station Sunday, delivering NASA astronauts Doug Hurley and Bob Behnken to the orbiting research complex after a trouble-free 19-hour flight from the Kennedy Space Center.

Two days after becoming the first U.S. space fliers to splash down in the sea in more than 45 years, astronauts Doug Hurley and Bob Behnken on Tuesday described their fiery ride back to Earth aboard SpaceX’s Crew Dragon capsule to cap a “flawless” test flight, setting the stage for operational flights beginning later this year.

A United Launch Alliance Delta 4-Heavy rocket climbed into space Sunday with NASA’s Parker Solar Probe on a daring mission to explore the atmosphere of the sun. Liftoff from Cape Canaveral occurred at 3:31 a.m. EDT (0731 GMT).