NASA Is Pushing Lunar Pit-Stop to Mars, But Elon Musk’s Plan Is More Direct

The way to Mars, NASA believes, is two-fold: first, we return to the Moon and build a deep-space “pit-stop” station in Lunar orbit. Then, after perfecting the next-gen model of ion propulsion, the agency will launch deep-space exploratory vessels to orbit the… [+8677 chars]Source