Scientists have discovered that salt glaciers may exist on Mercury, the closest planet to the sun and the solar system's smallest world. The discovery could show that even the most volatile conditions in the inner solar system may occasionally echo conditions found on Earth.
The team's findings complement recent discoveries that revealed Pluto has nitrogen glaciers. As Pluto exists on the far side of the solar system, the two discoveries imply that the glaciation extends from the hottest regions of the solar system, close to the sun, out to its frigid outer limits.
