Results 71 to 80 of about 33,014 (253)

Astrobiology - an opposing view [PDF]

open access: yesBioinformation, 2018
The use of quantum computers and Artificial Intelligence (AI) is imperative for use in space exploration and astrobiology investigations. Considerable progress has been made since the commencement of origin of life laboratory and theoretical studies in the mid 20th century.
openaire   +3 more sources

Physiological Differentiation within a Single-Species Biofilm Fueled by Serpentinization

open access: yesmBio, 2011
Carbonate chimneys at the Lost City hydrothermal field are coated in biofilms dominated by a single phylotype of archaea known as Lost City Methanosarcinales. In this study, we have detected surprising physiological complexity in single-species biofilms,
William J. Brazelton   +3 more
doaj   +1 more source

Philosophical Aspects of Astrobiology Revisited

open access: yesPhilosophies, 2021
Given the idea that Life as we know it is nothing but a special form of a generically underlying dynamical structure within the physical Universe, we try to introduce a concept of Life that is not only derived from first principles of fundamental physics,
Rainer E. Zimmermann
doaj   +1 more source

Is the Pale Blue Dot unique? Optimized photometric bands for identifying Earth-like exoplanets

open access: yes, 2016
The next generation of ground and space-based telescopes will image habitable planets around nearby stars. A growing literature describes how to characterize such planets with spectroscopy, but less consideration has been given to the usefulness of ...
Arney, Giada   +6 more
core   +1 more source

A Stochastic Process Approach of the Drake Equation Parameters

open access: yes, 2011
The number N of detectable (i.e. communicating) extraterrestrial civilizations in the Milky Way galaxy is usually done by using the Drake equation. This equation was established in 1961 by Frank Drake and was the first step to quantifying the SETI field.
Annis   +13 more
core   +3 more sources

Astrobiology (Overview)

open access: yes, 2021
Astrobiology seeks to understand the origin, evolution, distribution, and future of life in the universe and thus to integrate biology with planetary science, astronomy, cosmology, and the other physical sciences. The discipline emerged in the late 20th century, partly in response to the development of space exploration programs in the United States ...
openaire   +2 more sources

Astrobiological Effects of F, G, K and M Main-Sequence Stars

open access: yes, 2008
We focus on the astrobiological effects of photospheric radiation produced by main-sequence stars of spectral types F, G, K, and M. The photospheric radiation is represented by using realistic spectra, taking into account millions or hundred of millions ...
E. F. Guinan   +4 more
core   +1 more source

PAHs and Astrobiology

open access: yesPAHs and the Universe, 2020
In dense molecular clouds, the birthplace of stars and planets, interstellar atoms and molecules freeze onto extremely cold dust and ice particles. These ices are processed by ultraviolet light and cosmic rays forming hundreds of far more complex species,
L. Allamandola
semanticscholar   +1 more source

Astrobiology in the UK [PDF]

open access: yesAstronomy & Geophysics, 2009
Mark Burchell and Lewis Dartnell review the current standing of astrobiology research in the UK, and look to future success.
Lewis Dartnell, Mark J. Burchell
openaire   +2 more sources

Viability and Motility of Escherichia coli Under Elevated Martian Salt Stresses

open access: yesLife
This study investigates the effects of three Martian-relevant salts—sodium chlorate, sodium perchlorate, and sodium chloride—on the viability and motility of Escherichia coli, a model organism for understanding microbial responses to environmental stress.
Max Riekeles   +3 more
doaj   +1 more source

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