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.

NASA’s Artemis II crew boarded the Orion spacecraft on December 20, 2025, for a countdown demonstration test, rehearsing launch-day procedures at Kennedy Space Center’s Vehicle Assembly Building.

NASA’s launch and mission teams, along with the Artemis II crew, completed a key test Dec. 20, a countdown demonstration test, ahead of the Artemis II flight around the Moon early next year.

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

Scrub recap: Scroll down to review live updates from the Monday, July 21, late-countdown scrub of a SpaceX Falcon 9 launch attempt from Cape Canaveral on an SES O3b mPOWER mission. Original story: ...

CAPE CANAVERAL, Fla. (WHNT) — United Launch Alliance’s countdown is on for the U.S. Space Force’s Space Systems Command mission using a primarily Alabama-made rocket. The rocket used in the USSF-106 ...

The Indian Space Research Organisation (ISRO) has begun a 24-hour countdown for the launch of its LVM3-M6 rocket, set for ...

SpaceX launch doubleheader recap: Scroll down to review live updates from the Wednesday, Feb. 26, back-to-back liftoffs of two SpaceX Falcon 9 rockets from Cape Canaveral on the IM-2 lunar lander and ...

Live updates from the Starlink 6-99 mission, which launched 8:42 a.m. Dec. 17 from Pad 39A at NASA's Kennedy Space Center.

Live updates from Monday morning's SpaceX Starlink 6-82 mission that launched a Falcon 9 rocket from Cape Canaveral Space Force Station in Florida.

Scrub recap: Scroll down to review live updates from the Sunday, Nov. 9, scrubbed launch attempt of a Blue Origin New Glenn rocket from Cape Canaveral on the NASA ESCAPADE mission. Original story: ...