NASA is looking for liquid gold on the Moon — not oil, but plain-old water. If we’re going to have a permanent presence there, we’ll need it, so learning as much as we can about it is crucial. That’s why the agency is sending a rover called VIPER to the Moon’s south pole — its first long-term surface mission since 1972.
VIPER, or the Volatiles Investigating Polar Exploration Rover, will touch down in December 2022 if all goes according to plan. Its mission: directly observe and quantify the presence of water in the permanently shadowed polar regions.
These perennially dark areas of the Moon have been collecting water ice for millions of years, since there’s no sunlight to melt or vaporize it. NASA already confirmed the presence of water ice by crashing a probe into the general area, but that’s a bit crude, isn’t it? Better to send a robot in to take some precise measurements.