NASA joins a host of nations and companies that want to go to the lunar surface

Earlier this month, Vice President Mike Pence made NASA's new goal clear: the space agency is tasked with sending humans to the surface of the Moon again, this time to create a foundation for deep space missions. Though it's unclear exactly how the administration plans to pull this off, the new mission is a big change for NASA, which has been focused on going to Mars without a return to the lunar surface. But while NASA is shifting its focus, everyone else has also been looking to the Moon for s...