New observations from the Venus Express spacecraft as well as theoretical and
experimental investigation of Venus analogue materials have advanced our understanding …

Surface mineralogy records the primary composition, climate history and the geochemical
cycling between the surface and atmosphere. We have not yet directly measured mineralogy …

Gas–solid reactions on solar system bodies occur in the vicinity of their surfaces and in their
interiors where gases are liberated through magma degassing or thermal devolatilization …

The composition of Venus tessera terrain is unknown. The Visible and Infrared Thermal
Imaging Spectrometer (VIRTIS) aboard Venus Express (VEx) collects data that yields the …

Field research target regions within two basaltic geologic provinces are described as Earth
analogs to Mars. Regions within the eastern Snake River Plain of Idaho and the Big Island of …

Less than a year after the 2018 Kīlauea caldera collapse and eruption, water appeared in
newly deepened Halemaʻumaʻu crater. The lake—unprecedented in the written record …

Alteration of basalt on the surface of Venus should be dominated by nanophase hematite
and sulfate coatings, but the timescale of oxidation and how that affects spectroscopic …

Chemical and phase compositions of the surface of Venus could reflect a history of gas–rock
and fluid–rock interactions, recent and past climate changes, and a loss of water from the …

Ancient hydrology is recorded by sedimentary rocks on Mars. The most voluminous
sedimentary rocks that formed during Mars' Hesperian period are sulfate-rich rocks …

NASA's search for habitable environments has focused on alteration mineralogy of the
Martian crust and the formation of hydrous minerals, because they reveal information about …