SpaceX CEO Elon Musk said on Wednesday that the Raptor engine of its Starship launch vehicle is not perfect and needs a few more changes. What Happened: “Still a few final touches to perfect Raptor,” ...

A big explosion shook SpaceX's McGregor testing facility in Texas on Wednesday, as engineers put the company's latest Raptor engine through its paces on the newly commissioned Raptor South test stand.