Live coverage: International crew lands in Kazakhstan

International Space Station astronaut Jeff Williams opened the hatch and floated into the Bigelow Expandable Activity Module, or BEAM, experimental habitat today for the first time.

Doug Hurley and Bob Behnken, two veteran space shuttle fliers, are gearing up to fly a privately-developed SpaceX Dragon capsule into orbit this year.  These photos chronicle their recent training.

SpaceX’s fired the engines of its Falcon Heavy rocket at launch pad 39A at 12:30 p.m. EST (1730 GMT) on Wednesday. The crucial pre-launch engine test has been repeatedly delayed since the rocket returned to the launch pad earlier this month.