NASA had beentargeting a February 2022 launch, but is now looking into launch opportunities in March and April.

One of the controller’s two channels was not powering up consistently.

The agency will set a firmer launch date after completing a successful rehearsal.

The delay isn’t surprising.Getting into spaceat all is challenging enough.

When it does finally take off, SLS promises to be spectacular.

For a small peek at what to expect, check outthis dramatic SLS engine testfrom earlier in 2021.