This glowing, LED-illuminated sculpture of an old-school pay phone is by artist Doug Aitken. It’s titled “Twilight,” and it’s absolutely sublime. The artwork is one of dozens upon dozens of works by Aitken currently on view as part of his “Electric Earth” retrospective at MOCA Los Angeles. The exhibition is a must see. “Twilight” itself is an evocative object. The resin-cast sculpture generates a soft, cool light that beckons like a visual siren from the far end of a cavernous side gallery within MOCA’s gargantuan architectural footprint. It stands mysterious and totemic like a forgotten relic from the time before cellphones were ubiquitous, infused with a strange loneliness.