Results 31 to 40 of about 29,391 (220)

A philosophical and historical perspective about terms Astrobiology, Exobiology, Cosmobiology, Xenology and Bioastronomy

Revista Opinião Filosófica, 2023
The main idea here is to present reflections on the general aspects that structure the conceptual conception of the field of search for extraterrestrial life.
Anelisa Heizer, Bruno Nascimento-Dias
doaj   +1 more source

The Role of N2 as a Geo-Biosignature for the Detection and Characterization of Earth-like Habitats [PDF]

, 2019
Since the Archean, N2 has been a major atmospheric constituent in Earth's atmosphere. Nitrogen is an essential element in the building blocks of life, therefore the geobiological nitrogen cycle is a fundamental factor in the long term evolution of both ...
Cubillos, Patricio E., Fossati, Luca, Grenfell, John Lee, Lammer, Helmut, Lendl, Monika, Scherf, Manuel, Sproß, Laurenz   +6 more
core   +2 more sources

Prospective Use of Probiotics to Maintain Astronaut Health during Spaceflight

Life, 2023
Maintaining an astronaut’s health during space travel is crucial. Multiple studies have observed various changes in the gut microbiome and physiological health.
Sahaj Bharindwal, Nidhi Goswami, Pamela Jha, Siddharth Pandey, Renitta Jobby   +4 more
doaj   +1 more source

Physical constraints on the likelihood of life on exoplanets [PDF]

, 2017
One of the most fundamental questions in exoplanetology is to determine whether a given planet is habitable. We estimate the relative likelihood of a planet's propensity towards habitability by considering key physical characteristics such as the role of
Lingam, Manasvi, Loeb, Abraham
core   +1 more source

Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds

, 2007
As photosynthesis on Earth produces the primary signatures of life that can be detected astronomically at the global scale, a strong focus of the search for extrasolar life will be photosynthesis, particularly photosynthesis that has evolved with a ...
Antígona Segura, David Crisp, Giovanna Tinetti, Govindjee, , Janet Siefert, Leger A., Leger A., Martin Cohen, Nancy Y. Kiang, Robert E. Blankenship, Tucker C.J., Victoria S. Meadows, Wang A.   +12 more
core   +2 more sources

Alien life matters: reflections on cosmopolitanism, otherness, and astrobiology [PDF]

, 2016
This is a synaptic paper that invites the reader to take a stroll on the edges of cross-disciplinary knowledge. We will walk the roads of anthropology, history, philosophy, astronomy and biology.
Novoa, Andre
core   +3 more sources

Microbially generated ferruginous crusts: A potential biosignature of continental input in coastal settings

Sedimentology, EarlyView.
ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder, Renata Guimarães Netto, Alisson Klayton Martins   +2 more
wiley   +1 more source

Astrobiology and astrophilosophy: subsuming or bifurcating diciplines? [PDF]

, 2019
Initially, astrobiology subsumed into philosophy. However, philosophy has increasingly subsumed into astrobiology concurrent with it steadily becoming an observational and experimental activity that mainly focuses on the link between life and the cosmos,
von Hegner, Ian
core  

Astrobiological Complexity with Probabilistic Cellular Automata

, 2012
Search for extraterrestrial life and intelligence constitutes one of the major endeavors in science, but has yet been quantitatively modeled only rarely and in a cursory and superficial fashion.
A Ilachinski, AA Pavlov, AH Knoll, AJ Wood, AR Wallace, B Carter, B Carter, B Vukotić, B Vukotić, Branislav Vukotić, BS Soares-Filho, C Adami, C Cotta, C Maccone, C Maccone, C Sagan, C Walters, CF Chyba, CG Langton, CH Bennett, CH Lineweaver, CH Lineweaver, CH Lineweaver, CS Cockell, CS Cockell, CS Cockell, D Grinspoon, DC Dennett, DH Forgan, DJ Asher, DJ Des Marais, DM Raup, DR Gies, DW McShea, EM Jones, EM Leitch, F Drake, FJ Dyson, G Gonzalez, G Grinstein, G Radick, GA Landis, GD Brin, GG Simpson, GV Levin, HJ Rocha-Pinto, HJ Rocha-Pinto, I Fry, J Binney, J Matese, J Pérez-Mercader, JA Ball, JJ Matese, K Sterelny, KS Carslaw, M Batty, M Gardner, MAC Perryman, MD Hill, Milan M. Ćirković, MJ Burchell, MJ Burchell, MJ Fogg, MJ Rees, MK Wallis, MK Wallis, MM Ćirković, MM Ćirković, MM Ćirković, MM Ćirković, N Duric, NK Petersen, NS Kardashev, P Bak, P Ward, PCW Davies, PMC Oliveira de, R Bjørk, R Dawkins, RA Carrigan, RA Freitas Jr, RD Smith, S Conway Morris, S Conway Morris, S Dick, S Hoya White, S Webb, S Wolfram, S Wolfram, SG Wallenhorst, SJ Dick, SJ Gould, SJ Gould, SJ Gould, SVM Clube, V Clube, W Borkowski, WI Newman, WM Napier, WM Napier   +99 more
core   +1 more source

Limits of life and the habitability of Mars: The ESA space experiment BIOMEX on the ISS [PDF]

, 2019
BIOMEX (BIOlogy and Mars EXperiment) is an ESA/Roscosmos space exposure experiment housed within the exposure facility EXPOSE-R2 outside the Zvezda module on the International Space Station (ISS).
Alawi, Mashal, Backhaus, Theresa, Baqué, Mickael, Berger, Thomas, Billi, Daniela, Bohmeier, Maria, Böttger, Ute, Cockell, Charles [u.v.m.], Elsaesser, Andreas, Vera, Jean-Pierre de   +9 more
core   +1 more source