NASA/JPL-Caltech
During 2019 field tests near Greenland's Summit Station, a high-elevation remote observing station, the WATSON (Wireline Analysis Tool for the Subsurface Observation of Northern ice sheets) instrument is put through its paces to seek out signs of life, or biosignatures, 360 feet (110 meters) down a borehole. In this photograph, the winch that holds the drill pokes out the top of the drill tent.
WATSON could one day be launched aboard a robotic mission to seek out biosignatures on the ocean moons of Enceladus, Europa, or even Titan.