Such "countdown demonstration tests" have traditionally taken place shortly before launch with the rocket and crew ship ...

A major step toward launch day is complete as NASA's Artemis II astronauts ran through a countdown demonstration test.

Fresh off repairs at the launch pad in Florida, United Launch Alliance engineers restarted the countdown overnight for the third attempt to send an Atlas V rocket and Boeing’s Starliner spacecraft on ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

Japan will launch a new navigation satellite to orbit tonight (Dec. 16), and you can watch the action live. An H3 rocket is ...

NASA began the countdown for the launch of Space Shuttle Atlantis on mission STS-115 at noon EDT Thursday, Aug. 24, at the T-43 hour point. During this mission, Atlantis’ crew will resume the ...

A computer controlling the Atlas V rocket’s countdown triggered an automatic hold less than four minutes prior to liftoff of Boeing’s commercial Starliner spacecraft Saturday, keeping the crew test ...

A Falcon 9 rocket remains at Vandenberg Space Force Base after the team had to scrub liftoff attempt on Sunday morning. The next launch attempt will occur Monday. Credit: SpaceX photo With seconds ...

CAPE CANAVERAL, Fla. (AP) — Blue Origin called off the debut launch of its massive new rocket early Monday because of technical trouble. The 320-foot (98-meter) New Glenn rocket was supposed to blast ...

NASA will begin the countdown once again for the launch of Space Shuttle Atlantis on mission STS-115 Sept. 3 at 8 a.m. EDT, at the T-43 hour point. During this mission, Atlantis’ crew will resume the ...