Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

Bill Shepherd, a former Navy SEAL-turned astronaut who arrived at the International Space Station 20 years ago Monday to begin the continuous occupancy of the orbiting research outpost, says the experience gained by NASA and its global partners over the last two decades provides a blueprint for missions to the moon, Mars, and beyond.

SpaceX test-fired its next Falcon 9 rocket at NASA’s Kennedy Space Center on Saturday in preparation for the company’s 17th launch of the year, a mission tentatively set for liftoff Wednesday with a secretive payload named Zuma for the U.S. government.

Donald Trump calls the International Space Station from the Oval Office, offering congratulations to Expedition 51 commander Peggy Whitson on breaking the U.S. astronaut endurance record.