Virgin Galactic's SpaceShipTwo glides towards first powered flight

Virgin Galactic's SpaceShipTwo glides towards first powered flight:

After returning to the air earlier this year following a nearly nine-month long break which saw the integration of rocket motor systems, Virgin Galactic’s SpaceShipTwo completed its 23rd guide flight this week. The significance of this flight is that it was the spaceplane’s first glide in powered flight configuration...
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