Las Vegas’ “Sphere” stands 366 feet tall and spans 516 feet across — the largest spherical structure in the world. The Exosphere features 580,000 sq. ft. of fully-programmable LED lighting – making it the largest LED screen on Earth. Sphere will officially open in Las Vegas on September 29 with 25 sold-out concert performances by U2. The Darren Aronofsky-directed “Postcard from Earth,” an original immersive production, is scheduled to premiere October 6. Get Los Angeles breaking news, entertainment, weather, traffic and sports from L.A.’s Very Own, KTLA 5 News. Keeping Southern Californians informed since 1947.