On July 7, a small Miami company called City Labs put a tritium-powered battery the size of a pencil eraser into orbit aboard a SpaceX Falcon 9 — its softball-sized BOHR CubeSat becoming the first com

Early Tuesday morning, a softball-sized satellite built by Miami’s City Labs reached low Earth orbit aboard a SpaceX Falcon 9, becoming the first commercially built spacecraft to carry a nuclear power source and the first commercial nuclear mission c... [7192 chars]