A nurse anesthetist, or certified registered nurse anesthetist (CRNA), is a licensed professional nurse who provides the same anesthesia services as an anesthesiologist (MD). nurse anesthetist, or certified registered nurse anesthetist (CRNA), is a licensed professional nurse who provides the same anesthesia services as an anesthesiologist (MD).
A mannequin in a SpaceX spacesuit in Elon Musk's red Tesla sports car which was launched into space during the first test flight of the Falcon Heavy rocket. Photo: SpaceX With the successful demonstration flight, Falcon Heavy ranks as the world's most powerful existing rocket, with more lift capacity than any US space vehicle since the era of NASA's Saturn 5 rockets that took astronauts to the moon some 45 years ago.
A rocket or rocket vehicle is a missile, aircraft or other vehicle which obtains thrust by the reaction of the rocket to the ejection of fast moving fluid from a rocket engine. Chemical rockets work by the action of hot gas produced by the combustion of the propellant against the inside of combustion chambers and expansion nozzles.