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.

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 ...

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: ...

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

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: ...

Launch recap: Scroll down to read live updates from the Starlink 6-75 mission, which launched at 9:51 p.m. on May 1 from Cape Canaveral Launch Complex 40. Original story: Those up late may be able to ...