It has been 50 years since American astronauts Neil Armstrong and Edwin "Buzz" Aldrin set foot on the moon. Greta Van Susteren examines that incredible human achievement with space journalist Nancy Atkinson from Universe Today, former Space Shuttle astronaut Jim Voss and NASA Chief Scientist Dr. Jim Green, who brings a moon rock onto the set for us to see and touch. And hear from the Apollo astronauts themselves as they tell VOA's Kane Farabaugh about their mission and their visions of future space exploration.