The Las Vegas skyline will soon be dominated by a massive display. MSG and Sphere Entertainment have started full testing of the Sphere, a 17,600-seat venue near the The Venetian Resort that's defined by an enormous (516ft across and 366ft tall) animated dome and a wraparound internal 16K LED screen. It's eye-catching on the outside, but the main attraction is the immersion for live entertainment on the internal display — it's meant to rethink concerts and cinematic experiences. As MSG's James Dolan and David Dibble explain to Rolling St...