NASA

Stymied by a new liquid hydrogen leak, NASA called off its second attempt to launch the Artemis I flight test.

CAPE CANAVERAL -- NASA managers on Sept. 3 cleared the Kennedy Space Center launch team to proceed with fueling the two-stage Space Launch System (SLS

The weather forecast for a launch attempt on Sept. 3 is not ideal, with just a 40% chance conditions will be suitable for liftoff due to cloud cover and the chance of rain and lightning.

NASA had planned to launch the SLS, carrying an uncrewed Orion spacecraft, during a 2-hr. window that opened at 8:33 a.m. EDT. The next launch opportunity is at 12:48 p.m. EDT on Sept. 2.

CAPE CANAVERAL — The countdown for NASA’s first Space Launch System (SLS) rocket went into an unplanned hold at the T-minus-40 min. mark to allow the

SpaceX CRS-25 autonomously docked to the International Space Station’s U.S. segment Harmony module on July 16, delivering more than 5,800 lbs. of crew supplies, science investigations, technology development projects and station hardware.

The flight marks the first time NASA has launched from a commercial spaceport outside of the United States.

Axiom Mission-1's (Ax-1) four private astronauts successfully docked to the International Space Station (ISS) April 9, to begin an eight-day visit filled with medical and scientific research and technology development activities.

The April 3 WDR was scrubbed in response to a loss of capability to sufficiently pressurize the Mobile Launch Platform (MLP), upon which the 322-ft. tall, 5.75 million-lb. rocket rests.

Roscosmos CEO Dmitry Rogozin has again threatened that Russia could withdraw from the International Space Station if Western countries don’t lift

The reconfiguration of the James Webb Space Telescope continued on Dec. 30 with the removal of covers that protected the observatory’s delicate sunshield for launch, setting the stage for the deployment of a five-layer, tennis court-sized structure needed to passively cool the telescope for its science program.

“There’s 344 things that now have to work perfectly,” NASA Administrator Bill Nelson said in a post-launch interview.

NASA and Roscosmos continue to pursue an astronaut/cosmonaut crew exchange agreement for Soyuz and NASA Commercial Crew launches to the International Space Station.

Launch is being delayed to no earlier than Dec. 24 due to a communications issue between the observatory and its Ariane 5 launch vehicle.

The SLS is a cornerstone of NASA efforts to return to the Moon with human explorers and prepare for human expeditions to Mars.

The contracts mark kickoff of two-phase approach to moving from the government-owned ISS to a public-private outpost in low Earth orbit.

Initially planned for Nov. 30, the excursion was delayed two days so that NASA could assess a possible orbital debris concern.

NASA did not link the debris to a mid-November Russian anti-satellite (ASAT) missile test.

NASA management disagrees with a conclusion reached by the agency’s inspector general (IG) in a report issued Nov. 30.

Efforts to determine the root cause of the problem have been underway since Nov. 22.

NASA-led anomaly investigation found cause of vibration throughout James Webb Space Telescope.

The Dragon’s autonomous docking occurred at 6:32 p.m. EST Nov. 11, just under 40 min. earlier than initially projected.

A NASA spacecraft has begun a 12-year, 4 billion-mi. mission to explore an unusual population of asteroids that became locked in Jupiter’s orbit during the early days of the Solar System’s formation.

The upgrades should help prevent issues encountered during previous flights, including a debris strike that damaged a drogue parachute used during the descent of the Crew-1 mission in May.

Veteran NASA astronaut Mark Vande Hei may set a new record of 353 days for the longest U.S. human spaceflight.