Photos: Atlas 5 rolls out for launch

Concerns about the health of the Juno spacecraft’s main engine have compelled NASA managers to keep the research probe in its current arcing, high-altitude orbit around Jupiter, a decision that will delay the full science return from the $1.1 billion mission but should still allow it to meet all predetermined objectives.

Watch NASA’s Orion inflight abort test post-launch news briefing, held at the Kennedy Space Center two hours after the test.

A United Launch Alliance Atlas 5 rocket launched from Cape Canaveral with a classified payload for the National Reconnaissance Office at 5:32 p.m. EST (2232 GMT) Friday. The launcher debuted new Northrop Grumman-built solid rocket boosters.