Live coverage: H-2B rocket launch scrubbed after fire

Space station commander Scott Kelly and Kjell Lindgren carried out a busy but mostly trouble-free spacewalk Friday, routing ammonia coolant back to the prime radiator used by one of the lab’s solar arrays and bypassing a secondary radiator that was activated three years ago to help pinpoint a coolant leak.

Japan’s Epsilon rocket delivered a civilian-operated radar imaging satellite to orbit Wednesday on a mission to demonstrate the performance of a new commercial spacecraft design and collect all-weather imagery for use in emergencies, mapping and global surveillance.

A Russian Soyuz launcher fired into orbit from the remote steppe of Kazakhstan Thursday with 34 satellites built on Florida’s Space Coast, commencing a sequence of launches to deploy a network of nearly 650 spacecraft for a global broadband network owned by OneWeb.