Live coverage: Fresh crew docks at space station

Top officials from NASA and Roscosmos, the Russian space agency, could decide soon to commit to keeping the International Space Station staffed and flying through at least 2028, four years after the research lab’s current retirement date.

Problems with a downrange tracking station kept Rocket Lab’s Electron launcher on the ground in New Zealand Friday, U.S. time, and the company ordered a two-day delay to resolve the issues and wait for improved weather. Rocket Lab pushed back the launch again to Tuesday because of unfavorable weather.

The towering structure to be used for liftoffs of NASA’s Space Launch System rolled from a construction site to launch pad 39B at the Kennedy Space Center in Florida this week, arriving at the seaside complex Friday for a week of fit checks.