Results 1 to 10 of about 11,207 (165)

Terrestrial atmosphere, water and astrobiology

EPJ Web of Conferences, 2010
Primitive life, defined as a chemical system capable to transfer its molecular information via self-replication and also capable to evolve, originated about 4 billion years ago from the processing of organic molecules by liquid water.
Coradini M., Brack A.
doaj   +1 more source

The microbial ferrous wheel in a neutral pH groundwater seep

Frontiers in Microbiology, 2012
Evidence for microbial Fe redox cycling was documented in a circumneutral pH groundwater seep near Bloomington, Indiana. Geochemical and microbiological analyses were conducted at two sites, a semi-consolidated microbial mat and a floating puffball ...
Eric eRoden, Joyce M McBeth, Marco eBlothe, Elizabeth Maria Percak-Dennett, Emily J Fleming, Rebecca R Holyoke, George W. Luther, David eEmerson   +7 more
doaj   +1 more source

Perchlorates on Mars enhance the bacteriocidal effects of UV light

Scientific Reports, 2017
Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal.
Jennifer Wadsworth, Charles S. Cockell
doaj   +1 more source

LIFE‐VALUE NARRATIVES AND THE IMPACT OF ASTROBIOLOGY ON CHRISTIAN ETHICS

Zygon, 2016
“Pale Blue Dot” and “Anthropocene” are common tropes in astrobiology and often appear in ethical arguments. Both support a decentering of human life relative to biological life in terms of value.
doaj   +2 more sources

Domains of life sciences in spacefaring: what, where, and how to get involved

npj Microgravity
The integration of biology and spacefaring has led to the development of three interrelated fields: Astrobiology, Bioastronautics, and Space Bioprocess Engineering.
Aaron J. Berliner, Spencer Zezulka, Gwyneth A. Hutchinson, Sophia Bertoldo, Charles S. Cockell, Adam P. Arkin   +5 more
doaj   +1 more source

Editorial: Reviews in astrobiology

Frontiers in Astronomy and Space Sciences, 2023
Alberto G. Fairén, Alberto G. Fairén
doaj   +1 more source

Application of chemotactic behavior for life detection

Frontiers in Astronomy and Space Sciences
One excellent biosignature for the present detection of microbial life on Earth is motility, leading to its growing interest within the astrobiological community as an observable attribute that, if detected during future in situ space missions, could ...
Max Riekeles, Vincent Bruder, Vincent Bruder, Nicholas Adams, Berke Santos, Berke Santos, Dirk Schulze-Makuch, Dirk Schulze-Makuch, Dirk Schulze-Makuch   +8 more
doaj   +1 more source

Proteomic insights into survival strategies of Escherichia coli in perchlorate-rich Martian brines

Scientific Reports
Brines, potentially formed by the deliquescence and freezing point depression of highly hygroscopic salts, such as perchlorates (ClO4 −), may allow for the spatial and temporal stability of liquid water on present-day Mars.
Lea D. F. Kloss, Joerg Doellinger, Anne Gries, Elisa Soler, Peter Lasch, Jacob Heinz   +5 more
doaj   +1 more source

Emergence of biosignatures on Earth and implications for life detection. [PDF]

Proc Natl Acad Sci U S A
Barge LM, Eigenbrode JL, Fournier G, Theiling B.   +3 more
europepmc   +1 more source

Balance Between Order and Disorder: Quantum-Epigenetic Pathways for the Emergence and Continuous Evolution of Life. [PDF]

Acta Biotheor
Casotti MC, Campanharo CV, Melo DM, Barbosa DG, da Cruz Simões G, Pavan IP, Altoé LSC, Mauricio LSR, Queiroz MES, de Almeida Angelos T, Lopes VA, Guaitolini YM, da Silva AMÁ, Dalmaschio CJ, de Sousa MVP, de Queiroz Ferreira R, de Paula F, Louro ID, Meira DD.   +18 more
europepmc   +1 more source