Live coverage: Soyuz crew arrives at International Space Station

Astronauts will not fly to the International Space Station on SpaceX’s Crew Dragon spaceship until at least May 2018, NASA said this week, missing a previous target launch date at the end of next year.

Boeing and SpaceX are readying for launch abort tests in the coming weeks to validate the crew escape systems for the new human-rated Starliner and Crew Dragon spaceships, now scheduled to begin ferrying astronauts to the International Space Station in the first half of next year.

Ground controllers are running Europe’s ExoMars orbiter through a post-launch checkup a week after its successful liftoff aboard a Proton rocket, and a first look at the probe’s systems has revealed no problems, the mission’s flight director said Tuesday.