SpaceX's Starship debut delayed due to frozen valve.

SpaceX postponed the debut launch of its Starship rocket due to a frozen valve, delaying the uncrewed test flight for at least two days. The rocketship was originally slated for blast-off from the SpaceX "Starbase" facility at Boca Chica, Texas. A successful debut flight would represent a key milestone in SpaceX's ambition of sending humans back to the moon and ultimately to Mars. Both the lower-stage Super Heavy booster and the upper-stage Starship cruise vessel it would carry to space are designed as reusable components, capable of flying back to Earth for soft landings.