Satellite designer AST SpaceMobile said it's preparing to deploy nearly five dozen satellites to power cellular-based broadband networks, a move that establishes the company as a rival to Elon Musk's dominant SpaceX.The company, based in Texas, released its second-quarter earnings after the bell on Monday, reporting that its satellites are fully funded and preparing for deployment with more than $1.5 billion on its balance sheet.Shares of the space company surged more than 10% on the news on Tuesday. The st ...