AT&T Inc. and satellite provider AST SpaceMobile Inc. are teaming up to provide wireless service from space — a challenge to Elon Musk’s SpaceX, which struck a similar deal two years ago with T-Mobile US Inc. AST SpaceMobile jumped in extended trading on the news. AT&T and AST SpaceMobile formalized the partnership following an earlier testing period, the companies said Wednesday in a statementBloomberg Terminal. They said their agreement to build a space-based broadband network will run throug...