One thing the world will never run out of is heroes. Heroes have been around for as long as we have kept note of them. Heroes come in all types of aid. Heroes sometimes help in the form of leadership. Gaius Julius Caesar was one of the world’s most powerful leaders and was killed for that. Another great leader, Dr. Martin Luther King Jr., was also assassinated for his leadership. Sometimes a hero will lead a revolution in the area of science. Such as astronauts such as Neil Armstrong the American who was the first human to walk on the moon, and Russian astronaut Yuri Gagarin who was the first human to completely orbit the e