Rocket plane is a term used to describe a type of aircraft that is propelled by rocket engines. Synonyms for rocket plane include, but are not limited to, rocket aircraft, rocket-powered planes, rocket-propelled aircraft, and jet rocket planes. These terms are often used interchangeably, but each carries a slightly different connotation. Rocket aircraft suggests a generalization of any aircraft propelled by rocket engines, while rocket-powered planes specifically reference planes with rocket engines. Rocket-propelled aircraft can refer to any aircraft propelled by rockets or a specific type of aircraft designed for that purpose. Jet rocket planes refer to planes that use both jet and rocket engines for propulsion. Regardless of the term used, rocket planes are incredibly fast and powerful machines that can reach high altitudes and achieve unbelievable speeds.