Dermot Mulroney. Biography by Rebecca Flint Marx. An actor whose versatility is matched by the unpredictability of many of his career choices, Dermot Mulroney has been appearing in films since the early 1990s. Born in Alexandria, Virginia, on October 31, 1963, Mulroney developed an early interest in acting.
The first rockets were invented in China sometime between the 9th and 13th centuries (A.D). These were black powder rockets that were essentially what we would call fireworks today, but were technically what are known as solid fuel rockets.
It was a much more difficult task than building solid-propellant rockets. Fuel and oxygen tanks, turbines, and combustion chambers would be needed. In spite of the difficulties, Goddard achieved the first successful flight with a liquid-propellant rocket on March 16, 1926. Fueled by liquid oxygen and gasoline, the rocket flew for only two and a half seconds, climbed 12.5 meters, and landed 56 meters away in a cabbage patch.