NASA pushed its Artemis II mission to March after wrapping up a launch rehearsal that uncovered issues with the massive Space Launch System rocket's fueling process, the latest delay for the mission to fly four astronauts around the moon and back.

NASA says it can't try until March at the earliest to send a crewed spacecraft on a flight around the moon and back, due to hydrogen leaks during testing of the Artemis II rocket.

NASA is targeting March for the launch of four astronauts on a ten-day mission to circle the moon and return safely to Earth, traveling farther than any humans have traveled in deep space.

A NASA document showing the potential launch windows for its Artemis II moon mission appears to have been quietly updated on Tuesday, with the agency highlighting March 6 to 9 and March 11 as possible target dates.

Teams have stopped the flow of liquid hydrogen after leak concentrations exceeded allowable limits, and engineers are troubleshooting the issue, NASA said in a statement on its website. The earliest opportunity to launch is Feb.

NASA plans an on-pad repair of the fuel leak that derailed an overnight dress rehearsal countdown for the agency's huge Artemis II rocket. The agency then plans a second fueling test before making another attempt in March to launch four astronauts on a historic flight around the moon.

NASA had been targeting Feb. 8 for the launch of its Artemis 2 mission, which will send four astronauts on a 10-day trip around the moon and back to Earth. But the agency just mov

NASA is preparing for the first manned flight around the Moon in more than 50 years, which could include Canada’s first astronaut to travel that far. The Artemis II mission has been delayed to March.