“Former vice president Joe Biden is now the presumptive Democratic nominee for president — after a primary involving months of campaigning, 28 Democratic candidates and over $1 billion in ads," he writes. "Did any of that affect the result? Not much, our research suggests — but they weren’t meaningless.”
Rick Ryan/Cornell University
Lead rigger Ed Foster guides the movement of the Prime-Cam support raft, a carefully choreographed step in preparing the telescope for shipment.