The spacewalkers tested new SpaceX-designed pressure suits that could eventually be used by civilian astronauts on the moon and Mars.
Don Pettit is replacing astronaut Tracy Dyson, who plans to return to Earth on Sept. 23, after a six-month stay aboard the space station.
A SpaceX Falcon 9 rocket launched into space with billionaire Jared Isaacman and three crewmates aboard. CBS News space consultant Bill Harwood has the latest on the mission.
SpaceX launched its Polaris Dawn rocket into orbit Tuesday morning after several failed attempts. If all goes according to plan this time, the four private civilians on board will take part in a a historic space walk that's set for Thursday. CBS News space analyst Bill Harwood has more.
The Europa Clipper remains on track for launch Oct. 10 to study Jupiter's icy moon Europa, where a vast ocean lurks beneath an icy crust.
The mission features the first non-government spacewalk by billionaire Jared Isaacman and SpaceX crew trainer Sarah Gillis.
Boeing's Starliner spacecraft departed the International Space Station on Friday just after 6 p.m., starting a journey back to Earth without any crew on board. The ship is expected to drop out of orbit and plunge to a landing at White Sands, New Mexico, just after midnight Eastern Time.
The Starliner slammed into the discernible atmosphere 400,000 feet above the Pacific Ocean before descending to a parachute-and-airbag assisted touchdown.
NASA has decided to fly Boeing's Starliner spacecraft back from the International Space Station without astronauts due to safety concerns. The spacecraft is expected to land in New Mexico just after midnight, weather permitting, marking another setback in the troubled multi-billion-dollar program.
Leaving its crew behind, the Starliner is expected to undock and head for landing in New Mexico to wrap up a disappointing test flight.
Crew 9 commander Zena Cardman and Stephanie Wilson will stay behind when the Crew 9 mission takes off on Sept. 24.
Blue Origin launched six passengers, including a NASA-sponsored researcher and the youngest woman to fly in space, in the company's eighth crewed spaceflight.
The crash-landing of a SpaceX booster ended a string of 267 successful recoveries in a row.
SpaceX pressed ahead with plans for back-to-back launches of Starlink internet satellites Wednesday, one from Florida and the other from California. But there were some issues in Florida when the first stage of the Falcon 9 rocket toppled over after landing at sea. CBS News senior national correspondent Mark Strassmann has more.
The landing mishap ended a string of 267 successful booster recoveries.