Some bright Martian soil containing lots of sulfur and a trace of water intrigues researchers who are studying information provided by NASA’s Spirit rover. “This material could have been left behind ...

Planetary scientists like me have known that sulfur exists in lunar rocks and soils, but only at a very low concentration. These new measurements imply there may be a higher sulfur concentration than ...

Acid sulfate soils are naturally occurring, sulphide‐rich soils that, when exposed to atmospheric oxygen, undergo oxidation processes which result in the formation of sulphuric acid. This ...