Salty Glaciers Indicate Potential Habitable Zone Below Mercury's Surface
Salty glaciers have been discovered near the north pole of Mercury, suggesting that the planet may have a "potentially habitable" region below its surface. These glaciers, composed of salt and volatile compounds, were revealed by asteroid impacts that exposed material trapped below the surface. Despite Mercury's proximity to the sun, these salt flows could have preserved their volatiles for over a billion years. The discovery of these glaciers also helps explain the mystery of craters with missing chunks. Further studies are needed to understand how the volatile layers were deposited and to explore the potential for subterranean life on Mercury.