This Is the Best Spot for Humans to Land on Mars Yet, NASA Says
If humans want to not die on Mars, they’ll need a reliable source of water. NASA scientists think they’ve found it in a place where ice is so close to the surface that astronauts could get to it with a shovel.
The Best Place to Train Astronauts Exists on Earth, But Not Where You'd Think
In caves deep enough to hold entire cities, astronauts and 'cavenauts' are on a mission to prepare themselves for life on Mars.