21 papers · ranked by Valyu relevance
Dimitra Atri, Todd Godderidge, Dee Cirium, Dimple Patel + 1 more
'Gunasekar Ramakrishnan'] With a fleet of exploratory space missions on the horizon, the study of target specific biospheres is crucial for accurately determining the probability of the existence of microbial life on various planetary bodies and prioritising targets accordingly. Although previous studies have compared…
Steven D. Vance, Kathleen L. Craft, Everett Shock, Britney E. Schmidt + 31 more
The habitability of Europa is a property within a system, which is driven by a multitude of physical and chemical processes and is defined by many interdependent parameters, so that its full characterization requires collaborative investigation. To explore Europa as an integrated system to yield a complete picture of…
Stephen R. Kane, P. K. Byrne
A major focus of the planetary science and astrobiology community is the understanding of planetary habitability, including the myriad factors that control the evolution and sustainability of temperate surface environments such as that of Earth. The few substantial terrestrial planetary atmospheres within the Solar…
Daniel Apai, Rory Barnes, Matthew M. Murphy, Tim Lichtenberg + 12 more
'Noah Tuchow' 'Regis Ferriere' 'Kevin Wagner' 'Antonin Affholder' 'Renu Malhotra' 'Baptiste Journaux' 'Allona Vazan' 'Ramses Ramirez' 'Abel Mendez' 'Stephen R. Kane' 'Veronica H. Klawender' 'NExSS Quantitative Habitability Science Working Group'] Daniel Apai ´ , 1, 2, 3 Rory Barnes , 4 Matthew M. Murphy , 1, 3 Tim…
L.E. Ratliff, A.H. Fulford, C.I. Pozarycki, G. Wimp + 3 more
To define the boundaries of habitability, biologists often search for highly specialized organisms in extreme environments. However, negative life detections—when a method is unable to detect microorganisms in a given setting—are just as important to constrain the environmental limits of life on Earth. In turn, these…
Karen Donaldson, Jonah Mack, Yuchen Shang, Ian Underwood + 3 more
One key objective of astrobiology is to investigate and discover if other planetary bodies are habitable. The determination of whether an environment is habitable to known life requires measuring liquid water, CHNOPS elements, other nutrients, and energy supplies. Here we investigate the potential for a single…
F. van der Tak
perspective Authors: ['F. van der Tak'] Abstract As of 2023, over 5500 planets are known to orbit stars other than our Sun. We can measure their sizes and orbital periods, infer their masses and temperatures, and constrain their compositions. Based on these data, about 1% of extrasolar planets are potentially habitable…
Hannah Woodward, Andrew Rushby, Nathan J. Mayne
Planetary surface habitability has so far been, in the main, considered in its entirety. The increasing popularity of 3D modelling studies of (exo)planetary climate has highlighted the need for a more nuanced understanding of surface habitability. Using satellite-derived data of photosynthetic life to represent the…
R. Wordsworth, C. Cockell
Standard definitions of habitability assume that life requires the presence of planetary gravity wells to stabilize liquid water and regulate surface temperature. Here the consequences of relaxing this assumption are evaluated. Temperature, pressure, volatile loss, radiation levels and nutrient availability all appear…
Andreas Elsaesser, David J. Burr, Paul Mabey, Riccardo Giovanni Urso + 17 more
'Daniela Billi' 'Charles Cockell' 'Hervé Cottin' 'Adrienne Kish' 'Natalie Leys' 'Jack J. W. A. van Loon' 'Eva Mateo-Marti' 'Christine Moissl-Eichinger' 'Silvano Onofri' 'Richard C. Quinn' 'Elke Rabbow' 'Petra Rettberg' 'Rosa de la Torre Noetzel' 'Klaus Slenzka' 'Antonio J. Ricco' 'Jean-Pierre de Vera' 'Frances…
Richard A. Boyle, Edmund R. R. Moody, Gunnar Babcock, Daniel W. McShea + 3 more
'Daniel W. McShea' 'Sandra Álvarez-Carretero' 'Timothy M. Lenton' 'Philip C. J. Donoghue'] Title: Significance Darwinian evolution is life’s fundamental sense-making principle and Earth is the only (known) planetary/climatic system capable of supporting life. However, the question of whether Darwinian evolution tends…
Sara Vannah, Ian D. Stiehl, Marcelo Gleiser, Michael J. Way
In the past, measures of the “Earth-likeness” of exoplanets have been qualitative, considering an abiotic Earth, or requiring discretionary choices of what parameters make a planet Earth-like. With the advent of high-resolution exoplanet spectroscopy, there is a growing need for a method of quantifying the…
Cassie M Hopton, Charles S Cockell, Michael Macey
The search for life now extends beyond the traditional habitable zone to include the icy moons of Jupiter and Saturn. These moons feature ice-covered surfaces overlying substantial oceans formed primarily of liquid water and other potential constituents, such as ammonia. On Earth, ammonia supports biochemistry at low…
Sarah Gonzalez-Henao, Matthew O. Schrenk, Betül Kaçar
The search for life elsewhere in the universe has remained one of the main goals of astrobiological exploration. In this quest, extreme environments on Earth have served as analogs to study the potential habitability of Mars and icy moons, which include but are not limited to hydrothermal vent systems, acid lakes…
Maodi Liang, Qinghua Cui
A recent study has revealed that Earth’s magnetic field strength and atmospheric oxygen level exhibit strongly correlated, linearly increasing trends (M-O relationship) over the past 540 million years. This discovery sheds new lights on the long-standing debate regarding whether a strong magnetic field is an essential…
Aoi Murakami, Yu Komatsu, Kenji Takizawa
The vegetation red-edge of terrestrial plants is a key biosignature for detecting Earth-like habitable exoplanets. Although water is essential for plants, an excess of water can limit the distribution of terrestrial vegetation. On planets with extensive water coverage and limited land, floating vegetation on the…
Holly R. Rucker, Tucker D. Ely, Douglas E. LaRowe, Donato Giovannelli + 1 more
Putative alkaline hydrothermal systems on Noachian Mars were potentially habitable environments for microorganisms. However, the types of reactions that could have fueled microbial life in such systems and the amount of energy available from them have not been quantitatively constrained. In this study, we use…
Claudia Coleine, Davide Albanese, Angelique E. Ray, Manuel Delgado-Baquerizo + 8 more
Endolithic niches offer an ultimate refuge, supplying buffered conditions for microorganisms that dwell inside rock airspaces. Yet, survival and growth strategies of Antarctic endolithic microbes residing in Earths’ driest and coldest desert remains virtually unknown. From 109 endolithic microbiomes, 4,539…
Authors not listed
Considering the harsh surface conditions on Mars, terrestrial organisms that can survive and remain detectable after exposure to similar conditions provide invaluable models for guiding current and future search-for-life missions. To this end, we evaluated the extremophilic archaeon Acidianus manzaensis grown on…
Amelia Carolina Sparavigna
Vivianite is a hydrated iron phosphate mineral (Fe3(PO4)2·8H2O), crystallized in a monoclinic system. It is the endmember of a mineral series known as the vivianite group, where minerals have the general formula A3(XO4)2·8H2O, A is a divalent metal cation and X is phosphorus P or arsenic As. Today, vivianite is…
Norio Kitadai, Takazo Shibuya, Hisahiro Ueda, Eiji Tasumi + 2 more
Abiotic synthesis of methanethiol through CO2 reduction is a presumptive initiation reaction of protometabolism in primordial ocean hydrothermal systems. However, reported artificial means of methanethiol production indicate the necessity of gas-phase condition, rather than aqueous-phase setting, for this prebiotic…