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