There’s a lot of rancor and confusion surrounding NASA’s future. Critics say the human spaceflight program is a mess, that NASA is moving too slowly on a new deep-space rocket, and that the decision to let commercial companies take over the flights to low earth orbit was a risky one. I’ve talked to the top two people at NASA (Bolden and Garver — see story), who assure me that all is on track, that there’s a program, a mission, a destination. But it gets fuzzy when you ask about details.