Live coverage: Orion lands in Pacific

NASA announced Monday it will order at least six reusable Orion crew capsules from Lockheed Martin for $4.6 billion to fly astronauts to the vicinity of the moon in the 2020s, and the agency said it plans to purchase hardware for up to 12 Orion vehicles by 2030.

Engineers plan to redesign part of the Orion capsule’s self-righting flotation system that only partially engaged as the spacecraft splashed down in the Pacific Ocean following an orbital test flight in December, NASA officials said.

Two crewmen returned to Earth from the International Space Station on Friday, riding a Russian Soyuz spaceship to a parachute-assisted, rocket-cushioned landing in Kazakhstan to close out more than 196 days in orbit. Oleg Novitskiy and Thomas Pesquet undocked from the station at 1047 GMT (6:47 a.m. EDT) and landed in Kazakhstan at 1410 GMT (10:10 a.m. EDT).