
Dec. 4, 2014 — A United Launch Alliance Delta IV Heavy rocket with NASA’s Orion spacecraft mounted atop is seen…

The launch gantry is rolled back to reveal NASA’s Orion spacecraft mounted atop a United Launch Alliance Delta IV Heavy…

Dec. 4, 2014 — At Cape Canaveral Air Force Station in Florida, the launch of NASA’s Orion spacecraft was postponed…

Dec. 4, 2014 – A hold in the count has been called due to a violation of ground winds. The…

Dec. 4, 2014 – A spectacular sunrise at NASA’s Kennedy Space Center in Florida heralds the arrival of a new…

Dec. 4, 2014 — At Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida, fueling of the…

Dec. 4, 2014 — In the Mission Directorate Center at Cape Canaveral Air Force Station in Florida, NASA and contractor…

Dec. 4, 2014 — At Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida, super cold liquid…

Dec. 4, 2014 — At Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida, a United Launch…

The Bell X-5 was built to test the feasibility of changing the sweep angle of an aircraft’s wings in flight.