research overview
- Raina Gough’s research focuses on the formation and stability of aqueous salt solutions on present day Mars. Mars is known to have abundant H2O in the gas (vapor) or solid (ice) phases, but it is not clear if liquid water can exist. In the past years, however, spacecraft on Mars have collected data suggesting that small amounts of liquid water may exist on the surface or in the subsurface for some portion of the Martian year. Salts such as perchlorates and chlorides are present in the Martian soil and may play a key role in stabilizing liquid water. We experimentally study the formation and stability of liquid salt solutions under low temperature conditions using Raman microscopy. We are particularly interested in deliquescence, which is a relative humidity-induced solid-to-aqueous phase transition. From 2016 to 2023, Dr, Gough was a participating scientist on the Mars Science Laboratory mission to Mars which involves science operations of the Curiosity rover currently traversing Mars.