A Chinese rocket carrying the first satellites of a communications constellation meant to rival Starlink broke up in low-Earth orbit, U.S. Space Command confirmed—creating hundreds of pieces of debris and continuing a series of worrying incidents, experts said. 
U.S. Space Command declared full operational capability Dec. 15, four years after the nation’s 11th combatant command was established—and before it has a permanent home base. After an in-depth evaluation, including affirming the command's ability to function under what SPACECOM commander Gen. James Dickinson called ...