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Preparing the latest launch data.
TMinusZero
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Preparing the latest launch data.
Cursor-paged feed of authority-ranked Artemis items from articles, NASA media assets, social posts, and structured program data.
Editor’s note: This blog post was updated at 4:09 p.m. EST on Feb. 2, 2026, to correct the status of liquid hydrogen operations at the time of posting. Ground teams have resumed loading liquid hydrogen operations into the core stage of the SLS (Space Launch S...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
After teams temporarily resumed fast fill of liquid hydrogen operations into the core stage, initial steps to correct the leak proved unsuccessful. The leak rate at the interface of the tail service mast umbilical continued to exceed the allowable limits. Liq...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Teams have started chilling down the lines used to feed liquid oxygen into the upper stage. Troubleshooting of liquid hydrogen loading into the core stage continues.
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Teams have stopped the flow of liquid hydrogen through the tail service mast umbilical interface into the core stage after leak concentrations exceeded allowable limits. Stopping the flow allows engineers to perform troubleshooting procedures that were develo...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
As teams continue to fuel the SLS (Space Launch System) rocket’s core stage with liquid oxygen and liquid hydrogen, teams began propellant loading operations for the rocket’s interim cryogenic propulsion stage (ICPS), or upper stage. The launch control team i...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Teams began chilling down the liquid hydrogen lines for the interim cryogenic propulsion stage of NASA’s SLS (Space Launch System) rocket. This critical step cools the propellant lines ahead of loading super-cold liquid hydrogen, chilled to minus 423 degrees...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Following successful chilldown of the liquid hydrogen and liquid oxygen lines, teams started slowly filling the SLS (Space Launch System) rocket’s core stage with super-cold liquid hydrogen, chilled to minus 423 degrees Fahrenheit, then with liquid oxygen chi...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Teams have started chilling down the liquid hydrogen (LH2) and liquid oxygen (LOX) lines for the SLS (Space Launch System) rocket’s core stage. This critical step cools the propellant lines ahead of loading super-cold liquid hydrogen and liquid oxygen into th...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
At approximately 11:25 a.m. EST, the Artemis launch director, in coordination with the mission management team chair, gave the “go” to begin loading cryogenic liquid propellant into the SLS (Space Launch System) rocket for wet dress rehearsal. While teams con...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
The Artemis II wet dress rehearsal countdown continues as teams at NASA’s Kennedy Space Center in Florida began configuring the SLS (Space Launch System) rocket and Orion spacecraft with gaseous nitrogen, an important step to mitigate fire hazards, protect sp...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
NASA continues to press ahead through the countdown for the Artemis II wet dress rehearsal – a fueling test of the SLS (Space Launch System) rocket. Teams monitored all systems throughout the overnight hours during cold temperatures and high winds at the agen...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
The countdown for the Artemis II wet dress rehearsal is underway at NASA’s Kennedy Space Center in Florida. The countdown clock began at 8:13 p.m. EST, or L-48 hours, 40 minutes before the opening of a simulated launch window at 9 pm. Mon, Feb. 2. The test is...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Four astronauts will soon travel beyond low Earth orbit and fly around the Moon on Artemis II, a mission that will test NASA’s systems and hardware for human exploration of deep space.  Since June 2023, NASA astronauts Reid Wiseman,...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Off the coast of California, NASA’s Artemis Landing and Recovery team and the Department of War that will work together to retrieve the Artemis II crew and Orion spacecraft following their return to Earth and splashdown in the Pacific Ocean are performing a f...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
NASA is targeting Monday, Feb. 2, as the tanking day for the upcoming Artemis II wet dress rehearsal at the agency’s Kennedy Space Center in Florida, as a result of weather. With this change, the first potential opportunity to launch is no earlier than Sunday...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Teams at NASA’s Kennedy Space Center in Florida continue to prepare the SLS (Space Launch System) rocket, Orion spacecraft, and ground infrastructure in advance of the Artemis II test flight. Engineers have remained on track or ahead of schedule as they work...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
The next astronauts to fly around the Moon went into quarantine late Friday. NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with CSA (Canadian Space Agency) astronaut Jeremy Hansen, will ensure that they don’t pick up any illness that...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Shortly after NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft arrived to Launch Pad 39B at the agency’s Kennedy Space Center in Florida on Jan. 17, engineers began preparations for an upcoming wet dress rehearsal, a fueling test of the...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
The final booster motor segments for NASA’s SLS (Space Launch System) rocket that will help propel Artemis III astronauts on their journey to space shipped from Northrop Grumman’s Railyard Shipping Facility in Corinne, Utah on June 2. The eight booster motor...
Why shown: TIER1 nasa primary article; mission mapped to Artemis III; authority-tier ranked source.
NASA completed the agency’s Artemis II Flight Readiness Review on Thursday, March 12, and polled “go” to proceed toward launch. NASA is targeting Thursday, March 19, to roll the SLS (Space Launch System) rocket and Orion spacecraft to launch pad 39B in advanc...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
With NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft in the Vehicle Assembly Building at the agency’s Kennedy Space Center in Florida, technicians have accessed the launch vehicle stage adapter to inspect components that prevented heli...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Once NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft arrived at the Vehicle Assembly Building (VAB) Feb. 25, technicians immediately began addressing why the flow of helium to the SLS upper stage was interrupted as engineers were recon...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
The SLS (Space Launch System) rocket and Orion spacecraft for NASA’s Artemis II mission arrived at the Vehicle Assembly Building from Launch Pad 39B at approximately 8 p.m. EST Feb. 25, at NASA’s Kennedy Space Center in Florida. While in the as...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.
Editor’s Note: The launch director gave the “go” for rollback at 9:28 a.m. EST followed by first motion 10 minutes later. NASA’s SLS (Space Launch System) rocket and Orion spacecraft for the Artemis II mission began rolli...
Why shown: TIER1 nasa primary article; mission mapped to Artemis II; authority-tier ranked source.