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  • Liquid Hydrogen Filling Operations Resume

    Teams have resumed the flow of liquid hydrogen into the core stage after warming up the quick disconnect, or interface where the fuel feed line connects to the rocket, to reseat the connection as part of their troubleshooting plan to fast fill the propellant.

  • Astronaut, Two Cosmonauts Launch to Join Station Crew

    NASA astronaut Frank Rubio and Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin are safely in orbit on the Soyuz MS-22 spacecraft after launching at 9:54 a.m. EDT from the Baikonur Cosmodrome in Kazakhstan (6:54 p.m. Baikonur time).  The Soyuz will dock to the space station’s Rassvet module at 1:11 p.m. About two hours after docking, …

  • Hydrogen Leak Detected During Slow Fill Operations

    Launch controllers have detected a hydrogen leak in a cavity in the tail service mast umbilical and have stopped flowing the propellant to the rocket while they troubleshoot the issue. Engineers will warm up the quick disconnect, or interface where the fuel feed line connects to the rocket, to attempt to reseat it.

  • New Crew Launching to Station Live on NASA TV

    NASA TV coverage now is underway for the launch of a crewed Soyuz spacecraft to the International Space Station with NASA astronaut Frank Rubio and Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin. The Soyuz MS-22 spacecraft will launch from the Baikonur Cosmodrome in Kazakhstan at 9:54 a.m. EDT (6:54 p.m. Baikonur time). Launch and docking activities …

  • Core Stage Liquid Oxygen Chilldown Complete, Slow Fill Underway

    After chilling the lines for liquid oxygen (LOX), teams have begun the slow fill phase to load LOX into the Space Launch System (SLS) rocket’s core stage and have started chilling down the transfer line for the liquid hydrogen (LH2). Once LOX slow fill is complete, teams will transition to fast fill operations. Once the …

  • Launch Director Gives “Go” to Begin Cryogenic Operations, NASA TV Coverage Underway

    Artemis Launch Director Charlie Blackwell-Thompson has given the “go” to officially begin loading propellants into the Space Launch System rocket as part of today’s Artemis I cryogenic demonstration test. Weather remains favorable for the test. Tanking operations will begin with chilldown of the core stage liquid oxygen transfer line. NASA TV coverage is underway.  

  • Preparations Continue, Key Milestones for Artemis I Demonstration Test 

    As the countdown continued Tuesday toward the cryogenic demonstration test, teams conducted final closeouts at the pad and performed other preparations for the test. Work will continue through the night, and all non-essential personnel will leave Launch Pad 39B by 3:40 a.m. EDT Wednesday. The launch director is expected to give a “go” to begin …

  • SAGE III Sees Tonga Aerosols, Water Vapor Months After Eruption

    In July, purple and pink hues painted the Antarctica and New Zealand skies — likely the result of atmospheric particles called aerosols that belched into the stratosphere in January during the eruption of the Hunga Tonga-Hunga Ha’apai volcano. Aerosols from eruptions, and extreme wildfires, can remain in the stratosphere for months to years traveling around the […]