Finland says suspects two Russian military aircrafts violated airspace

NASA's X-59 quiet supersonic research aircraft successfully completed a critical series of tests in which the airplane was put through its paces for cruising high above the California desert - all without ever leaving the ground. "The idea behind these tests is to command the airplane's subsystems and flight computer to function as if it is flying," said Yohan Lin, the X-59's lead avionics engineer at NASA's Armstrong Flight Research Center in Edwards, California. The goal of ground-based si