Video: Weather causes Atlas 5 countdown hold

The launch from Cape Canaveral of a top secret spy satellite for the U.S. government was aborted at the last moment early Saturday as its United Launch Alliance Delta 4-Heavy rocket ignited three main engines, a dramatic cutoff of the countdown that will delay the mission by at least one week.

NASA’s Soil Moisture Active Passive satellite blasts off aboard a United Launch Alliance Delta 2 rocket Saturday, launching into orbit on a three-year mission to measure moisture levels in Earth’s soils.

Boeing specialists working inside a former space shuttle hangar in Florida started fueling the company’s first spaceflight-ready Starliner capsule this week ahead of the ship’s rollout to its launch pad later this month. The fueling milestone is a major step in the Starliner launch campaign, and comes after engineers concluded that human error led to a parachute deployment malfunction during a crew capsule abort test Monday.