Results 81 to 90 of about 29,535 (220)

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

Life-Detection Technologies for the Next Two Decades

, 2018
Since its inception six decades ago, astrobiology has diversified immensely to encompass several scientific questions including the origin and evolution of Terran life, the organic chemical composition of extraterrestrial objects, and the concept of ...
Bodas, Dhananjay, Carr, Christopher, Chen, Huan, Cleaves II, H. James, Fujii, Yuka, Furukawa, Yoshihiro, Genda, Hidenori, Gillams, Richard J., Giri, Chaitanya, Hamano, Keiko, Jia, Tony Z., Kameda, Shingo, Krishnamurthy, Ramanarayanan, Meinert, Cornelia, Meringer, Markus, Paknikar, Kishore, Rajamani, Sudha, Shivaji, Sisinthy, Steele, Andrew, Taniguchi, Masateru, Usui, Tomohiro, Yabuta, Hikaru, Yamagishi, Akihiko   +22 more
core  

The Cyborg Astrobiologist: Testing a Novelty-Detection Algorithm on Two Mobile Exploration Systems at Rivas Vaciamadrid in Spain and at the Mars Desert Research Station in Utah

, 2009
(ABRIDGED) In previous work, two platforms have been developed for testing computer-vision algorithms for robotic planetary exploration (McGuire et al. 2004b,2005; Bartolo et al. 2007).
A. Bonnici, Aha, Alexander, B.H. Foing, Barnes, Bilbey, C. Gross, Chen, E. Díaz-Martínez, H. Ritter, J. Ontrup, J. Ormö, King, L. Wendt, M. Oesker, McGreevy, P.C. McGuire, R. Bose, R. Haschke, Rae, S. Walter, V. Souza-Egipsy   +21 more
core   +1 more source

NASA Research and Analysis: Status, Issues, and Recommendations for the Planetary Science and Astrobiology Decadal Survey Committee [PDF]

, 2021
Julie Castillo‐Rogez, M. Sykes, Amanda Hendrix, J. A. Rathbun, Christina Richey, P. K. Byrne   +5 more
openalex   +1 more source

The minimum energy required to build a cell

Scientific Reports
Understanding the energy requirements for cell synthesis accurately and comprehensively has been a longstanding challenge. We introduce a computational model that estimates the minimum energy necessary to build any cell from its constituent parts.
Edwin Ortega-Arzola, Peter M. Higgins, Charles S. Cockell   +2 more
doaj   +1 more source

Astrobiology [PDF]

Nature, 2001
  +5 more sources

The Impact of the Temporal Distribution of Communicating Civilizations on their Detectability

, 2017
We use a statistical model to investigate the detectability (defined by the requirement that they are in causal contact with us) of communicating civilizations within a volume of the universe surrounding our location.
Balbi, Amedeo
core   +1 more source

Exoplanets and SETI

, 2017
The discovery of exoplanets has both focused and expanded the search for extraterrestrial intelligence. The consideration of Earth as an exoplanet, the knowledge of the orbital parameters of individual exoplanets, and our new understanding of the ...
A Loeb, A Przybylski, A Stevens, A Wolszczan, BM Oliver, C Majeau, CD Dressing, CE Singer, CR Cowley, DH Forgan, DJ Kessler, DM Kipping, DP Whitmire, EA Petigura, EJ Korpela, FJ Dyson, G Cocconi, GR Harp, GW Pace, H Isaacson, H Kawahara, HA Knutson, HW Lin, I Shklovskiĭ, J Freeman, J Guillochon, J Maire, J Schneider, J Tarter, J Wit de, JF Kasting, JR Kuhn, JT Wright, L Kreidberg, LFA Arnold, LN Filippova, LN Filippova, M Lingam, MC Turnbull, MC Turnbull, NB Cowan, PV Makovetskii, PV Makovetskii, RA Carrigan Jr, RA Carrigan Jr, RHD Corbet, RN Bracewell, RS Dixon, S Shostak, T Henry, T Schelling, WA Traub, Z Osmanov   +52 more
core   +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

The habitability of the Universe through 13 billion years of cosmic time [PDF]

, 2016
The field of astrobiology has made tremendous progress in modelling galactic-scale habitable zones which offer a stable environment for life to form and evolve in complexity.
Cockell, Charles, Dayal, Pratika, Ward, Martin   +2 more
core   +1 more source