Saturday marks the 50th anniversary of Neil Armstrong becoming the first person to walk on the Moon. It is an important success in American history and an important scientific breakthrough for all of humanity. But no one has been on the Moon since the US astronauts lasted there in 1972. In March, Vice President Mike Pence announced the goal of returning Americans to the Moon in 2024. The NASA plan consists of to return to the lunar surface and to establish a space station in lunar orbit that one day can serve as a route station for a mission to Mars. Proponents of the return to the Moon consider it vital not only for human exploration but also for maintaining the United States' competitiveness with other nations, such as China. However, skeptics return to the Moon say that it is too expensive and doubt whether the political will that fueled lunar missions during the Cold War still exists.