When the $2.3 billion Sphere first lit up on July 4, “it was like something out of a sci-fi movie,” says David Dibble, CEO of MSG Ventures, which developed the Las Vegas entertainment venue’s tech. “People got out of their cars and were just staring up.” Its 366-ft.-tall exterior is earth’s biggest LED screen—a lattice of 1,230,000 pucks that can make it look like a ball or planet or … anything. Inside it boasts a 160,000-sq.-ft. curved screen and an advanced concert-grade audio system, both now put to use for a residency by U2.