SpaceX was poised to launch another critical test flight of its massive Starship rocket on Sunday, a mission that comes with heightened stakes following a series of explosive setbacks this year.

Starship's 10th flight test was scheduled to lift off from SpaceX's Starbase launch site in the Rio Grande Valley of Texas. The company has yet to successfully complete a mission for the the stainless-steel spacecraft, which is being engineered to be fully reusable and would be able to carry up to 100 people to deep space destinations.

SpaceX hoped to launch its Starship Flight 10 test mission on Sunday (Aug. 24) at 7:30 p.m. EDT (2330 GMT), but is now targeting Aug. 25.