The conditions, timing, and setting for the origin of life on Earth and whether life exists
elsewhere in our solar system and beyond represent some of the most fundamental …

Early Mars climate research has well-defined goals (MEPAG 2018). Achieving these goals
requires geologists and climate modelers to coordinate. Coordination is easier if results are …

Caves and lava tubes on the Moon and Mars are sites of geological and astrobiological
interest but consist of terrain that is inaccessible with traditional robot locomotion. To support …

Our understanding of Earth's rock-hosted subsurface biosphere has advanced over the past
two decades through the collection and analysis of fluids and rocks from aquifers within the …

Investigations of abiotic and biotic contributions to dissolved organic carbon (DOC) are
required to constrain microbial habitability in continental subsurface fluids. Here we …

This comprehensive study delves into the significance of asteroid research and proposes a
systematic classification consisting of seven distinct categories. Initially, a concise definition …

Subsurface habitats on Earth host an extensive extant biosphere and likely provided one of
Earth's earliest microbial habitats. Although the site of life's emergence continues to be …

Hundreds of ancient lake basins detected on Mars via orbital remote sensing represent rare
oases of hydrosphere–atmosphere–lithosphere interactions with great astrobiological …

On November 5–8, 2019, the “Mars Extant Life: What's Next?” conference was convened in
Carlsbad, New Mexico. The conference gathered a community of actively publishing experts …

Recognizing fossil microorganisms is essential to the study of life's origin and evolution and
to the ongoing search for life on Mars. Purported fossil microbes in ancient rocks include …