A United Launch Alliance Delta IV Heavy common booster core is about to be offloaded from the company's Mariner ship at Port… https://www.rawpixel.com/image/440464/free-photo-image-cc0-common-booster-core-creative-commonsFree Image from public domain licenseA United Launch Alliance Delta IV Heavy common booster core is about to be offloaded from the company's Mariner ship at Port… https://www.rawpixel.com/image/440457/free-photo-image-astronomy-booster-core-cc0Free Image from public domain license