SpaceX's Mars rocket exploded. It was still a success

A giant experimental rocket built by Elon Musk's SpaceX successfully soared eight miles above the company's testing facilities in South Texas on Wednesday and came back down as planned, before crashing into the ground in an enormous plume of flames and smoke.

source https://www.cnn.com/2020/12/09/tech/spacex-starship-40000-foot-test-flight-scn/index.html