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Assessing the Earliest Evidence for Life in the Geologic and Genomic Records
2+ hour, 30+ min ago (186+ words) Both the geologic and genomic records provide information on the earliest history of terrestrial life. Despite the challenges inherent to the fragmentary and highly metamorphosed earliest rock record, microfossils as old as "3. 5 billion years (Ga) and potential morphological and isotopic…...
Gorgona Island (Colombia) As A Terrestrial Analog Of Syrtis Major (Mars): Evidence From Geochemical Meta-analyses And Compositional Figures Of Merit
1+ week, 1+ hour ago (223+ words) The identification of terrestrial analogs is a key strategy for advancing our understanding of the geological and geochemical evolution of Mars. This study evaluates the potential of Gorgona Island (Colombian Pacific) as a geochemical analog of Syrtis Major. Gorgona Island…...
ALERA-V Version 1. 0: An Objective Analysis Dataset of the Venus Atmosphere - Astrobiology
1+ week, 5+ day ago (254+ words) An objective analysis dataset of the Venus atmosphere, ALERA-V version 1. 0, has been released. This objective analysis provides the best estimate of the state of the Venus atmosphere produced by combining observations and a forecast model weighted according to their respective…...
Correlative Microstructural Analysis of a Weathered Nantan Meteorite Fragment
1+ mon, 2+ week ago (194+ words) astrobiology. com Correlative Microstructural Analysis of a Weathered Nantan Meteorite Fragment The weathering of iron-rich phases within meteorites is a multi-stage process that significantly alters the microstructure and chemical composition based both on the environmental condition at the location of…...
Hawaiian Geothermal Fumaroles Contain Diverse and Novel Viruses
1+ mon, 3+ week ago (266+ words) astrobiology. com Hawaiian Geothermal Fumaroles Contain Diverse and Novel Viruses Microbial communities of geothermal habitats are central to understanding the evolution of life on Earth. Metagenomics has provided insight into the role of viruses in shaping microbial diversity of complex…...
Advancement of "Science as a Service (Saa S)" for NASA and Commercial Partners Request for Information
2+ mon, 1+ week ago (281+ words) astrobiology. com Advancement of "Science as a Service (Saa S)" for NASA and Commercial Partners Request for Information A new Science Mission Directorate (SMD) Request for Information (RFI) entitled "Advancement of "Science as a Service (Saa S) for NASA and Commercial Partners…...
How Early Cell Membranes May Have Shaped The Origins Of Life
4+ mon, 1+ week ago (906+ words) astrobiology. com How Early Cell Membranes May Have Shaped The Origins Of Life Modern cells are complex chemical entities with cytoskeletons, finely regulated internal and external molecules, and genetic material that determines nearly every aspect of their functioning. This complexity…...
NASA ROSES-2026 To Be Released July 2026
4+ mon, 1+ week ago (153+ words) astrobiology. com NASA ROSES-2026 To Be Released July 2026 In 2025, NASA's Science Mission Directorate (SMD) released the annual Research Opportunities in Space and Earth Sciences (ROSES) solicitation in July rather than February, the traditional target release date. For simplicity, consistency, and…...