The result is that Stoke’s novel design looks nothing like a standard rocket engine, which typically has a large, bell-shaped ...

The rotating planets, meanwhile, are replaced by a series of steel segments that modulate the magnetic fields so that the sun and ring rotors can be coupled ... and minimises maintenance requirements.

BOCA CHICA BEACH, Texas—I've taken some time to process what happened on the mudflats of South Texas a little more than a week ago and relived the scene in my mind countless times. With each ...