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Complex spacewalk repair work begins Friday
After four years of brainstorming, custom tool development and training, two astronauts plan to venture outside the International Space Station Friday for the first of four spacewalks to repair a $2 billion cosmic ray detector. The excursions are considered the most challenging since work to service the Hubble Space Telescope.

SpaceX fires up Crew Dragon thrusters in key test after April explosion
SpaceX test-fired the Crew Dragon spacecraft's eight SuperDraco abort engines Wednesday at Cape Canaveral, paving the way for a high-altitude rocket escape test and demonstrating engineers have apparently fixed the problem that triggered an explosion during a similar ground firing in April.

Video: Crew Dragon tests abort thrusters at Cape Canaveral
SpaceX conducted a static fire test of the SuperDraco abort thrusters on the company's Crew Dragon spacecraft Wednesday afternoon at Cape Canaveral Air Force Station.

Next three-man Soyuz crew training to have space station to themselves
The next three-man crew to launch on a Soyuz rocket -- comprising two Russian cosmonauts and a veteran NASA astronaut -- is training to have the International Space Station to themselves after their arrival at the orbiting research outpost in April, at least until new U.S. commercial crew ships enter service.

Repair equipment for particle physics experiment aboard next station cargo launch
Northrop Grumman's Cygnus supply ship set for liftoff Saturday will deliver to the International Space Station the final hardware for a series of ambitious spacewalks later this month to install a new coolant system on the Alpha Magnetic Spectrometer, a $2 billion particle physics experiment seeking the cosmic signatures of dark matter and antimatter.

Bridenstine says NASA not holding up commercial crew schedule
NASA Administrator Jim Bridenstine said this week the space agency is not unduly delaying the debut of new SpaceX and Boeing commercial crew capsules as engineers gear up for a challenging rapid-fire sequence of test flights in the next few months, all against the backdrop of in-depth safety reviews before clearing the privately-owned ships to carry astronauts.

NASA likely to buy Soyuz seats, defer Japanese astronaut flight
With lingering uncertainly about when new commercial crew spaceships will be ready to launch humans, NASA Administrator Jim Bridenstine said Thursday the space agency will replace a Japanese astronaut with a U.S. space flier on the next Russian Soyuz launch to the International Space Station. He added that it remains in NASA's interests to pay Russia for one or more additional Soyuz seats next year to ensure the station remains continuously staffed with at least one American.

Koch, Meir conclude first all-female spacewalk
Astronauts Christina Koch and Jessica Meir carried out history's first all-female spacewalk Friday, floating outside the International Space Station and successfully installing a 230-pound replacement battery charger in the lab's solar power system. The historic excursion was carried out in a blaze of public interest that rose all the way to the White House.

All-female spacewalk on tap this week
Two NASA astronauts will take part in the first all-female spacewalk this week, a critical outing to restore lost power in the wake of an equipment failure that cropped up after new batteries were installed in the International Space Station’s solar power system during two earlier spacewalks.
VideoBoeing reveals target dates for initial Starliner test flights
Boeing officials said Wednesday that the company is targeting Dec. 17 for the launch of the first unpiloted orbital test flight of the new Starliner crew capsule from Cape Canaveral on a week-long demonstration mission to the International Space Station, a precursor to a mission with astronauts next year.