Atlas 5/Cygnus NASA TV broadcast

Cape Canaveral was the point of origination for the United Launch Alliance Atlas 5 rocket and the classified NROL-52 payload.

Mission leaders Tuesday gave approval for rollout of the United Launch Alliance Atlas 5 rocket to its pad on Wednesday morning, leading to liftoff Thursday evening of a NASA probe to rendezvous with an asteroid and bring a sample back to Earth.

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.