Results 51 to 60 of about 32,223 (288)

Preservation of glycine coordination compounds under a gamma radiation dose representative of natural mars radioactivity

open access: yesScientific Reports, 2022
The Martian subsurface is more favorable for organic preservation than its surface because of the shielding effect of rocks from cosmic rays and UV radiation with increasing depth.
Laura J. Bonales   +3 more
doaj   +1 more source

Red-edge position of habitable exoplanets around M-dwarfs

open access: yesScientific Reports, 2017
One of the possible signs of life on distant habitable exoplanets is the red-edge, which is a rise in the reflectivity of planets between visible and near-infrared (NIR) wavelengths.
Kenji Takizawa   +4 more
doaj   +1 more source

Human crew-related aspects for astrobiology research [PDF]

open access: yes, 2011
Several space agencies and exploration stakeholders have a strong interest in obtaining information on technical and human aspects to prepare for future extra-terrestrial planetary exploration.
Foing, B.H., Pletser, V., Thiel, C.S.
core   +2 more sources

Extremophiles: Link between earth and astrobiology [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2008
Astrobiology studies the origin, evolution, distribution and future of life in the universe. The most promising worlds in Solar system, beyond Earth, which may harbor life are Mars and Jovian moon Europa.
Stojanović Dejan B.   +5 more
doaj   +1 more source

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

open access: yes, 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

Adaptationism fails to resolve Fermi's paradox [PDF]

open access: yesSerbian Astronomical Journal, 2005
One of the most interesting problems in the nascent discipline of astrobiology is more than half-century old Fermi's paradox: why, considering extraordinary young age of Earth and the Solar System in the Galactic context, don't we perceive much older ...
Ćirković Milan M.   +2 more
doaj   +1 more source

A sustainable culture of tardigrades (Hypsibius dujardini) for astrobiological laboratory activities [PDF]

open access: yesEPJ Web of Conferences, 2019
Tardigrades are microscopic organisms that have gained importance in astrobiology in recent years. They have extreme survival ability and can enter into a state of latency for several years called cryptobiosis.
Núñez Patricia G.   +2 more
doaj   +1 more source

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

open access: yesRevista 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]

open access: yes, 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.   +6 more
core   +2 more sources

Center for Astrobiology: Toward the RNA-World in the Interstellar Medium-Detection of Urea and Search of 2-Amino-oxazole and Simple Sugars.

open access: yesAstrobiology, 2020
In the past decade, astrochemistry has witnessed an impressive increase in the number of detections of complex organic molecules. Some of these species are of prebiotic interest such as glycolaldehyde, the simplest sugar, or aminoacetonitrile, a possible
I. Jímenez-Serra   +10 more
semanticscholar   +1 more source

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