New Delhi, Feb. 22 -- NASA is preparing for the possibility of rolling back the Artemis II rocket and Orion spacecraft to the Vehicle Assembly Building (VAB) at Kennedy Space Center in Florida after engineers detected an interrupted flow of helium to the Space Launch System's upper stage.

The space agency said the issue was identified overnight on February 21 involving the SLS (Space Launch System) rocket's interim cryogenic propulsion stage. Teams are currently reviewing data and taking steps to position the vehicle for a potential rollback while determining the best path forward.

To preserve troubleshooting options at both Launch Pad B and the VAB, teams are removing pad access platforms installed earlier. NASA said the platforms cann...