NASA conducted its fourth wet dress rehearsal attempt for its Space Launch System rocket this week, completing a critical trial run at fueling the rocket mostly without issue. Officials were uncertain one day after the test if the Moon rocket would require another round of fueling. The agency has since communicated that it intends to launch SLS as early as last August without a fifth go at working out the kinks during fueling.

Over the last few years, the pieces of NASA’s Artemis I mission have slowly been making their way to Kennedy Space Center for final checkouts and stacking. For the past couple of months, NASA has been preparing to receive the final parts of the rocket with the first step towards a fully stacked SLS finishing the other day.

This Saturday NASA and their contractors are planning on conducting the final Green Run test for NASA’s Artemis-1 core stage of the Space Launch System rocket. This will be the only time the stage will be fired for a full 8 minutes before its flight.

A couple of weeks ago, on December 20, NASA completed the wet dress rehearsal test for the Space Launch System (SLS) core stage. And then today, the agency finally announced that it would be moving forward with the green run hot fire test, targeting a date “as early as January 17.”