NASA is in the process off rolling its towering Artemis 2 moon rocket back to its hangar after more than a month at Launch Complex-39B at the Kennedy Space Center due to a helium system issue.
- NASA's Artemis 2 moon rocket has a problem. No launch until April.
- Artemis 2 moon rocket fueling test goes well on 2nd try
- NASA's Apollo 8 saved 1968. Could Artemis 2 do the same in 2026?
First motion confirmed: SLS begins rollback to VAB
SLS is on the move!
The Artemis 2 launch director issued the "go" order for SLS to begin its journey from Launch Complex-39B to the Vehicle Assembly Building at NASA's Kennedy Space Center this morning (Feb. 25) at 9:38 a.m. EST (1438 GMT), with first motion confirmed about 10 minutes later, according to a NASA blog post Wednesday morning.
The rollback is expected to take about 12 hours, as SLS travels the four miles between the launchpad and VAB. Once back inside, technicians will lower platforms in the VAB's High Bay 3 to gain entry to SLS's upper stage access ports and begin their diagnosis and repair of helium issues discovered after the rocket's second wet dress rehearsal Feb. 19.
NASA Artemis 2 rocket begins return journey to hangar for repairs
The Artemis 2 Space Launch System (SLS) rocket, standing at Launch Complex-39B since its arrival Jan. 17, is about to begin the slow journey back to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center (KSC) for repairs.
NASA had targeted a launch window beginning March 6 for the earliest opportunity to launch SLS with its Orion spacecraft carrying the astronauts of Artemis 2 on a 10-day mission around the moon, but a helium issue that arose after the rocket's most recent fueling test has prompted a rollback to the VAB and a push of the mission's launch window to April.
Artemis 2 ground teams are targeting 9 a.m. EST (1400 GMT) for first motion of SLS on its mobile launch platform, as it begins a 12-hour journey over the four miles between LC-39B and the VAB. Once safely back in the hangar, engineers will lower access platforms inside the massive building to gain access to SLS's Interim Cryogenic Propulsion Stage (ICPS), in order to address the issue.
Artemis 2 crew to attend State of the Union address as NASA prepares SLS rollback
Teams at NASA's Kennedy Space Center continue work at Launch Complex-39B to prepare the Artemis 2 Space Launch System (SLS) rocket and mobile launch platform (MLP) to roll the vehicle back to the Vehicle Assembly Building for repair, with first motion expected tomorrow morning (Feb. 25) at 9 a.m. EST (1400 GMT).
In the meantime, the Artemis 2 crew, assuredly not launching during their mission's March window, are released from their pre-launch quarantine and free to move about the world as their astronaut schedules permit. Tonight, that schedule will be taking them to the U.S. Capitol for President Trump's State of the Union address, according to an Axios report.
At the invitation of House Speaker Mike Johnson (R-La.), the Artemis 2 crew will be in the crowd this evening as the President updates the country on its current affairs. Johnson's state of Louisiana is home to NASA's Michoud Assembly Facility, in New Orleans, where much of SLS is constructed before being shipped to KSC for vehicle integration and launch.
The upcoming Artemis 2 mission to launch astronauts on a 10-day mission around the moon is lifting off on SLS, and the crew's attendance tonight at Johnson's invitation will no doubt serve as an excellent symbol of Louisiana's contributions to the national stage.
"It is my privilege to welcome these brave and courageous astronauts as my guests at the State of the Union Address," Johnson said in a statement to Axios.
Artemis 2 rollback targeted for 9 a.m. ET on Feb. 25
NASA has set a target time for the rollback of its Artemis 2 moon rocket — 9 a.m. EST (1400 GMT) on Wednesday (Feb. 25).
At around that time, Artemis 2's Space Launch System (SLS) rocket and Orion capsule will begin the 4-mile (6.4 kilometers) trek from Launch Pad 39B to the Vehicle Assembly Building (VAB) at Kennedy Space Center in Florida. The duo will make the journey, which could take up to 12 hours, atop NASA's massive Crawler Transporter-2 vehicle.
NASA is rolling Artemis 2 back to troubleshoot an issue with the SLS — an interruption in the flow of helium in the rocket's upper stage.
"Once back in the VAB, teams will immediately begin work to install platforms to access the area of the helium flow issue," NASA wrote in an update on Tuesday (Feb. 24). "Teams also will take advantage of the time in the VAB to replace batteries in the flight termination system and retest it, and replace additional batteries in the upper stage."
This work will ground the rocket until at least April 1, when the next Artemis 2 launch window opens.
NASA to roll Artemis 2 moon rocket off launch pad on Feb. 25
NASA plans to roll its Artemis 2 moon rocket off Kennedy Space Center's (KSC) Launch Pad 39B on Wednesday (Feb. 25). The agency had been eyeing Tuesday (Feb. 24) for the operation, but Mother Nature didn't cooperate.
"Cold temperatures and high winds are expected Tuesday, and rolling on Feb. 25 gives teams enough time to complete preparations at the launch pad that were limited today by high winds in the area," NASA officials wrote in an update on Monday evening (Feb. 23).
NASA is rolling the Artemis 2 stack back to KSC's Vehicle Assembly Building (VAB) to troubleshoot an issue with the Space Launch System rocket — specifically, a problem with helium flow in the vehicle's upper stage. It could take up to 12 hours for NASA's Crawler Transporter 2 vehicle, which will carry the Artemis 2 stack, to make the 4-mile (6.4 kilometers) trek from Pad 39B to the VAB.
The rollback takes the March launch window out of play for Artemis 2. The earliest the moon mission could now launch is April 1, though NASA has not said it is targeting that date.
Artemis 2 arrives at launch pad for moon launch
🚀 Our moonbound Artemis II rocket is on its launch pad! The Space Launch System rocket and Orion spacecraft rolled out from @NASAKennedy’s Vehicle Assembly Building, reaching Launch Pad 39B at 6:42pm ET (2342 UTC). Read more: https://t.co/NdRCRBfQGA pic.twitter.com/1oATLb7sTDJanuary 18, 2026
After more than 11 hours, NASA's might Artemis 2 moon rocket has arrived at it new launch pad home for the first time.
The Space Launch System rocket that will launch NASA's Artemis 2 astronauts around the moon arrived at its pad at Launch Complex 36B at the Kennedy Space Center in Cape Canaveral, Florida at 6:42 p.m. EST (2342 GMT), more than 11 1/2 hours after leaving its Vehicle Assembly Building hangar.
"In the coming days, engineers and technicians will prepare the Artemis II rocket for the wet dress rehearsal, a test of fueling operations and countdown procedures," NASA officials said in an update. "At the end of January, the team will load the rocket with cryogenic, or super-cold, propellants, run through the countdown, and practice safely draining the propellants from the rocket – all essential steps before the first crewed Artemis mission."
That fueling test is actually scheduled for Feb. 2, just days ahead of theopening of NASA's first Artemis 2 launch window on Feb. 6.
"Additional wet dress rehearsals may be required to ensure the vehicle is completely checked out and ready for flight," NASA wrote. "If needed, NASA may rollback SLS and Orion to the Vehicle Assembly Building for additional work ahead of launch after the wet dress rehearsal."
With the Artemis 2 SLS at the launch pad, this will be our final post of the day.
Thanks for joining us for our live coverage of the SLS rollout and have a great weekend!
Artemis 2 rocket continues toward launch pad in hour five
The NASA team behind the scenes making Artemis II possible. Thank you. https://t.co/B699LjmWTLJanuary 17, 2026
NASA has now passed the five-hour mark of today's Artemis 2 moon rocket roll out to the launch pad. We should be just over halfway to the pad, or slightly more than halfway, depending on if NASA's progress is following its eight-hour schedule or 10-hour plan. Here's a wrap on how things havce gone so far:
NASA rolls Artemis 2 rocket to the pad ahead of historic moon launch
NASA said it could take between 8-10 hours for the Artemis 2 Space Launch System to reach the pad due to the slow and steady pace of its Crawler Transporter, which moves at a top speed of 1 mile per hour, but does go slower on the turn toward Launch Pad 39B, as well as on the incline up to the pad.
That slow pace is necessary to keep the massive 11 million pound load of the 322-foot-tall SLS rocket and its Mobile Launch Platform stable.
NASA Administrator Jared Isaacman has taken the time to thank the vast team supprting today's rollout for Artemis 2.
"Thanks to all those who have worked hard to get Artemis II to the pad! Just a few more hours to go," Isaacman wrote in a social media post.
"The NASA team behind the scenes making Artemis II possible. Thank you.," he added.
Artemis 2 rocket creeps along toward launch pad
NASA's Artemis 2 moon rocket, the second-ever Space Launch System booster, is slowly making progress along the 4-mile journey to its Florida pad at Launch Complex 39B at the Kennedy Space Center in Cape Canaveral, Florida.
It's a slow roll for the Artemis 2 SLS. NASA's giant Crawler Transporter 2 carrier vehicle is carrying the 11 million pound stack at about 1 mile an hour. That's it's top speed. The massive carrier vehicle was originally built to move NASA's Saturn V rockets in the Apollo era, and later moved space shuttles to the pad as well.
Here's a video of the 32-story rocket as it emerged from NASA's cavernous Vehicle Assembly Building earlier today.
Artemis 2 moon rocket emerges from giant hangar
As we near the 2-hour mark of NASA's up to 10-hour move of the Artemis 2 rocket to its Florida launch pad, the 322-foot-tall Space Launch System is fully visible and has exited its massive Vehicle Assembly Building hangar.
Above is an amazing image from Space.com's Josh Dinner at the Kennedy Space Center as he's monitoring the rollout to Pad 39B.
Here's a video update from Josh via the Space.com TikTok channel.
"The place is basically a rocket cathedral," Dinner says of the VAB.
First motion for Artemis 2 rollout!
NASA reports that the towering Artemis 2 Space Launch System rocket is officially on the move.
First motion for today's rollout occurred at 7:04 a.m. EST (1204 GMT) as the huge rocket began its daylong trip to the launch pad. It is about 4 miles to Pad 39B from NASA's 52-stroy Vehicle Assembly Building (VAB), where the SLS for Artemis 2 was stacked and assembled.
"It takes us a little while to get out of the building, but about an hour after we get that first motion, you'll begin to see this beautiful vehicle cross over the threshold of the VAB and come outside for the world to have a look," Artemis 2 Launch Director Charlie Blackwell-Thompson said Friday.
Here's a look at our report from Friday's Artemis 2 press conference:
How to watch NASA's Artemis 2 rocket rollout
Now that we're all set for rollout, this will be our final post of the day.
Thanks for joining us and we'll see you bright an early on Saturday for rollout.
NASA Artemis 2 rollout briefing ends
Overall, it appears NASA is ready to move the 322-foot-tall Space Launch System rocket out to Pad 39B at the Kennedy Space Center in Florida on Saturday, Jan. 17, but time appears tight for the space agency's hope to launch the four Artemis 2 astronauts to the moon in February as planned.
Artemis 2 is NASA's first crewed Artemis mission and the first astronaut mission to the moon in over 50 years. As such, a series of tests on both the SLS rocket and Orion spacecraft for the mission must go well before it will be clear for astronauts to fly on then.
NASA has launched an SLS rocket and Orion spacecraft before, on the Artemis 1 mission in November 2022, but that was an uncrewed test flight. The Orion spacecraft on Artemis 2 is the first to include many life support systems to sustain astronuts on the 10-day mission.
NASA also wants to complete a fueling test on Feb. 2 that will help the space agency decide if it can proceed with a February launch. The February launch window is limited to a series of days between Feb. 6-10.
It took three attempts to launch Artemis 1, with fuel leaks contributing to two delays. NASA believe its has fixes in place, but needs to test them before Artemis 2 can launch.
If Artemis 2 is unable to launch in February, NASA can try again in March and April.
Artemis Launch Director Charlie Blackwell-Thompson said NASA has launch opportunities every month for Artemis 2, ranging from a few days to up to a week.
NASA Artemis 2 rollout press conference begins
- John Honeycutt, Artemis II mission management team chair
- Charlie Blackwell-Thompson, Artemis launch director, Exploration Ground Systems
- Jeff Radigan, Artemis II lead flight director, Flight Operations Directorate
- Lili Villarreal, landing and recovery director, Exploration Ground Systems
- Jacob Bleacher, chief exploration scientist, Exploration Systems Development Mission Directorate
"I will say, it really doesn't get much better than this," Honeycutt says in opening remarks." This is making history."
NASA to hold press conference on Artemis 2 rollout
Hello, Space Fans! NASA is one day away from its historic rollout of the Artemis 2 rocket that will carry four astronauts to the moon for the first time in over 50 years.
The Artemis 2 rocket, NASA's second Space Launch System booster, is currently scheduled to head out to Launch Pad 39B at the Kennedy Space Center in Florida on Saturday, Jan. 17, at 7 a.m. EST (1200 GMT). It should take several hours for the towering 322-foot rocket to reach the launch pad.
Space.com's Josh Dinner is on the scene at Kennedy Space Center for the Artemis 2 rollout, and will share insights on what the view is like there.
But first, NASA will hold a press conference today at 12 p.m. EST (1700 GMT) to discuss the Artemis 2 rollout, plans for the Feb. 6 launch of the 10-day mission around the moon.
You can watch that press conference live in the window above.
You must confirm your public display name before commenting
Please logout and then login again, you will then be prompted to enter your display name.
