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

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

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.

Japan will launch a new navigation satellite to orbit tonight (Dec. 16), and you can watch the action live. An H3 rocket is scheduled to launch the Michibiki 5 spacecraft from Tanegashima Space Center ...

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.

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.

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 ...

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.

Live updates from Tuesday morning’s Amazon Leo 4 mission that launched a ULA Atlas V rocket from Cape Canaveral Space Force ...