SpaceX plans to launch its Starship megarocket on its next test flight on Monday. The vehicle’s upper stage exploded over the Atlantic Ocean during the last such test.

Federal regulators have closed an investigation into what went wrong when a SpaceX Starship spacecraft — part of the most powerful launch system ever constructed — exploded during a January test flight.

The Federal Aviation Administration said Friday it has cleared the SpaceX Starship vehicle to return to flight operations while an investigation into the Jan. 16 Starship Flight 7 mishap remains open.