After the early Soviet successes, especially Yuri Gagarin's flight, US President John F. Kennedy looked for a project that would capture the public imagination. He asked Vice President Lyndon Johnson to make recommendations on a scientific endeavor that would prove US world leadership. The proposals included non-space options such as massive irrigation projects to benefit the Third World. The Soviets, at the time, had more powerful rockets than the US, which gave them an advantage in some kinds of space mission.