Live coverage: Two satellites lift off aboard Ariane 5

The European Space Agency has cinched an agreement with Arianespace for the October 2018 launch of the James Webb Space Telescope aboard an Ariane 5 rocket, which will dispatch the nearly $10 billion observatory on a bold mission that promises to rewrite astronomy textbooks.

NASA and SpaceX have delayed the launch of the Crew Dragon “Resilience” spacecraft from the Kennedy Space Center until 7:27 p.m. EST Sunday (0027 GMT Monday) to wait for improved downrange weather and sea conditions, and better onshore winds at the launch site.

Three crew members departed the International Space Station on Wednesday and descended back to Earth, touching down in Kazakhstan aboard the Soyuz TMA-14M capsule at 10:08 p.m. EDT (0208 GMT Thursday).