Live coverage: Atlas 5 countdown and launch journal

Assuming a May 1 launch, the Starliner spacecraft would dock with the ISS on May 2. The spacecraft will launch on the 100th flight of United Launch Alliance’s Atlas 5 rocket.

A new weather observatory that will track storms across the globe as it orbits from pole to pole has been trucked to its launch site in California for a long-awaited ascent into space this November.

A $1.1 billion science investigation involving four formation-flying satellites circling the Earth will share a single Atlas 5 rocket launch Thursday night from Cape Canaveral to probe explosions in the magnetic field with millisecond speed.