Amy's introduction at the end of Sonic the Hedgehog 3 sets up an incredible story for Sonic The Hedgehog 4, and I'm can't ...

The supersonic plane has a unique design that ... And at the back of the airplane you have engines, you have tails, you have lifting surfaces, and all of that creates a very complicated problem ...

Comet tails and other phenomena indicate that a thin, hot gas of solar particles flows past the earth at supersonic speeds. This gas is simply the expanding corona of the sun By E. N. Parker ...