Results 11 to 20 of about 1,716 (169)

A False Encounter: An Interspecies Martian Tale [PDF]

open access: yesPulse, 2021
This project concerns a fictional scenario in which an AI rover encounters an alien life form in the crevices of a Martian rock. The seconds in which this encounter takes place are mysteriously wiped out from the rover’s Pancam metadata. It is speculated
Oscar Salguero
doaj  

The Peak Absorbance Wavelength of Photosynthetic Pigments Around Other Stars From Spectral Optimization

open access: yesFrontiers in Astronomy and Space Sciences, 2021
In the search for life on other planets, the presence of photosynthetic surface vegetation may be detectable from the colors of light it reflects. On the modern Earth, this spectral reflectance is characterized by a steep increase in reflectance between ...
Owen R. Lehmer   +5 more
doaj   +1 more source

Nucleomorph phylogenomics suggests a deep and ancient origin of cryptophyte plastids within Rhodophyta. [PDF]

open access: yesNew Phytol
Summary The evolutionary origin of red algae‐derived complex plastids remains obscure. Cryptophyta, one of four eukaryotic lineages harboring these plastids, still contains nucleomorphs, which are highly reduced remnants of red algal nuclei. The genes present on nucleomorph genomes can be used for phylogenomic reconstruction in order to unravel the ...
Novák LVF   +6 more
europepmc   +2 more sources

Bacterial Metal Accumulation as a Strategy for Waste Recycling Management

open access: yesResources, 2023
Sustainable mechanisms for efficient and circular metal recycling have yet to be uncovered. In this study, the metal recycling potential of seven metal-resistant bacterial species (Deinococcus radiodurans, Deinococcus aerius, Bacillus coagulans ...
Denise Kölbi   +6 more
doaj   +1 more source

Présentation. Exobiologie, aspects historiques et épistémologiques

open access: yesCahiers François Viète, 2003
The definition of exobiology – the study of the origins, evolution and distribution of life in the universe, as well as of related structures and processes – raises the problem of the link between current and past studies on the origins of terrestrial ...
Florence Raulin Cerceau   +1 more
doaj   +1 more source

A Weakened Immune Response to Synthetic Exo-Peptides Predicts a Potential Biosecurity Risk in the Retrieval of Exo-Microorganisms

open access: yesMicroorganisms, 2020
The discovery of liquid water at several locations in the solar system raises the possibility that microbial life may have evolved outside Earth and as such could be accidently introduced into the Earth’s ecosystem.
Katja Schaefer   +9 more
doaj   +1 more source

Adaptations of endolithic communities to abrupt environmental changes in a hyper-arid desert

open access: yesScientific Reports, 2022
The adaptation mechanisms of microbial communities to natural perturbations remain unexplored, particularly in extreme environments. The extremophilic communities of halite (NaCl) nodules from the hyper-arid core of the Atacama Desert are self-sustained ...
Cesar A. Perez-Fernandez   +3 more
doaj   +1 more source

“Freezing” Thermophiles: From One Temperature Extreme to Another

open access: yesMicroorganisms, 2022
New detections of thermophiles in psychrobiotic (i.e., bearing cold-tolerant life forms) marine and terrestrial habitats including Arctic marine sediments, Antarctic accretion ice, permafrost, and elsewhere are continually being reported.
Tetyana Milojevic   +3 more
doaj   +1 more source

Free Energies of Reaction for Aqueous Glycine Condensation Chemistry at Extreme Temperatures

open access: yesGeophysical Monograph Series, Page 271-283., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Matthew Kroonblawd, Nir Goldman
wiley  

+1 more source

How Can Linguistics Help to Structure a Multidisciplinary Neo Domain such as Exobiology?

open access: yesBIO Web of Conferences, 2014
This chapter examines the contribution that corpus linguistics can make towards stabilising definitions within exobiology. By using the clues provided by natural language processing tools, linguists build an interpretation of contexts and try to show how
Condamines A.
doaj   +1 more source

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