Virgin Galactic's test space flight cut short after motor failure

Virgin Galactic Holdings Inc cut short a test flight of its suborbital SpaceShipTwo Unity plane on Saturday, safely returning its pilots to Spaceport America in New Mexico after the rocket motor’s ignition sequence failed to complete. Richard Branson’s space tourism company, which is preparing for commercial flights next year, was aiming to send the air-launched Unity spaceplane to an altitude as high as 50 miles to test its cabin experience and boosters in-flight.