The Falcon Heavy passed Max Q, or the moment of peak mechanical stress on the rocket, and reached booster engine cutoff (BECO), where both boosters cease firing and separated from the center core. The center booster also completed its burn and separated from the second stage that carries the Europa Clipper spacecraft. After that the fairing halves separated and are descending back to Earth, while second stage has started its approximately 3-minute burn to place Europa Clipper in a parking orbit.