Ramjet starship Artists impression of a space vehicle for travelling to the stars The tonne vehicle is powered by an interstellar ramjet A powerful magnetic field is generated ahead of the ship to pull hydrogen into the fuel scoop at the nose from where it passes into a fusion reactor Hot plasma generated by the reactor passes through the exhaust nozzle providing thrust Such a ship could theoretically approach of the speed of light Because of Einsteins Theory of Special Relativity it could travel the light years to the centre of our Galaxy in just years of onboard elapsed time while years passed back on Earth