NASA found an issue with helium flow in the upper stage of the Space Launch System rocket, prompting engineers to prep for a possible rollback and threatening the March launch window for Artemis II.

NASA's Artemis 2 faces new delays, pushing its launch to at least March. Here's why the crewed lunar mission is postponed, and when it might take off.

Add Yahoo as a preferred source to see more of our stories on Google. The towering rocket NASA will use to help propel four astronauts on a historic trip around the moon is vertical on the launch pad, ...

After completing a second wet dress rehearsal, NASA leaders were more confident that the Artemis II moon mission could launch March 6.

The Space Coast’s first human spaceflight of the year launched Friday morning as NASA and SpaceX sent up a mission to the International Space Station, and with it a rocket booster that ...

NASA and SpaceX sent a crew to the International Space Station in the pre-dawn hours of Friday in the Florida coast’s first human spaceflight of the year.

NASA's Artemis II rocket encountered a new helium flow issue which is likely to delay its early March launch. Here's what we ...

Technicians swapped seals at the launch pad after hydrogen gas leaked from the rocket’s main fueling line earlier this month.

NASA's Artemis 2 moon mission faces a new issue after a rocket test uncovered an issue with ground support equipment that ...

NASA's new moon rocket has suffered another setback, putting next month's planned launch with astronauts in jeopardy. The ...

A NASA test to confirm repairs to seals in the SLS’s liquid hydrogen fueling system was only partially successful because of problems with ground equipment.