Live coverage: Soyuz crew lands in Kazakhstan

Space station commander Jeff Williams and flight engineer Kate Rubins completed a smooth 6-hour 48-minute spacewalk Thursday, retracting a spare cooling radiator, installing two high-definition TV cameras and inspecting a massive solar array rotation mechanism that has experience subtle vibrations in recent months.

A new Russian satellite streaked into orbit aboard a Soyuz rocket Friday, carrying high-resolution cameras to survey the globe and a plasma physics experiment to seek out signs of exotic antimatter and dark matter in the cosmos.

President Trump’s fiscal 2020 budget request includes $21.02 billion for NASA, funding the agency’s ongoing efforts to develop commercial spacecraft and infrastructure in low-Earth orbit and to press ahead with construction and launch of the world’s most powerful rocket and the Orion crew ships that will carry astronauts back to the moon.