Live coverage: Atlas 5 countdown and launch journal

United Launch Alliance’s next launch attempt for its Delta 4-Heavy rocket from Cape Canaveral with a top secret U.S. government spy satellite will be delayed to no earlier than early Tuesday.

Crew members on the International Space Station over the weekend continued trying to pinpoint the location of a small air leak in the research outpost’s Russian Zvezda service module, one of the oldest sections of the orbiting laboratory.

India’s Polar Satellite Launch Vehicle lifted off at 2234 GMT (6:34 p.m. EDT) Wednesday with the country’s ninth navigation satellite, bolstering a regional positioning and timing network after the loss of a navigation craft on a previous PSLV mission last year.