Results 51 to 60 of about 8,849 (202)
Frontiers in Microbiology, 2017 The biology of metal transforming microorganisms is of a fundamental and applied importance for our understanding of past and present biogeochemical processes on Earth and in the Universe.
Denise Kölbl +6 more
doaj +1 more source
Effect of UV Radiation on the Spectral Fingerprints of Earth-like Planets Orbiting M dwarfs [PDF]
, 2015 We model the atmospheres and spectra of Earth-like planets orbiting the entire grid of M dwarfs for active and inactive stellar models with $T_{eff}$ = 2300K to $T_{eff}$ = 3800K and for six observed MUSCLES M dwarfs with UV radiation data.
Kaltenegger, L. +4 more
core +2 more sources
Nonphotosynthetic Pigments as Potential Biosignatures [PDF]
Astrobiology, 2015 21 pages, 12 figures, 5 tables.
Schwieterman, Edward W +2 more
openaire +8 more sources
Life, 2021 Searching for life in the Universe depends on unambiguously distinguishing biological features from background signals, which could take the form of chemical, morphological, or spectral signatures.
Nicholas Guttenberg +3 more
doaj +1 more source
High Stellar FUV/NUV Ratio and Oxygen Contents in the Atmospheres of Potentially Habitable Planets [PDF]
, 2013 Recent observations of several planet-hosting M dwarfs show that most have FUV/NUV flux ratios 1000 times greater than that of the Sun. Here we show that the atmospheric oxygen contents (O2 and O3) of potentially habitable planets in this type of UV ...
France, Kevin +4 more
core +2 more sources
Frontiers in Astronomy and Space Sciences, 2022 The detection of biomolecules on Solar System bodies can help us to understand how life emerged on Earth and how life may be distributed in our Solar System.
Loraine Schwander +16 more
doaj +1 more source
Exoplanet Biosignatures: Observational Prospects [PDF]
Astrobiology, 2018 part of a series of 5 review manuscripts of the NExSS Exoplanet Biosgnatures ...
Shawn Domagal-Goldman +15 more
openaire +8 more sources
Robust monomer-distribution biosignatures in evolving digital biota [PDF]
, 2011 Because organisms synthesize component molecules at rates that reflect those molecules' adaptive utility, we expect a population of biota to leave a distinctive chemical signature on their environment that is anomalous given the local (abiotic) chemistry.
Abelson P.H. +3 more
core +3 more sources
Life, 2021 Identifying microbial fossils in the rock record is a difficult task because they are often simple in morphology and can be mimicked by non-biological structures.
Andrew Gangidine +5 more
doaj +1 more source
Valuing life detection missions
, 2018 Recent discoveries imply that Early Mars was habitable for life-as-we-know-it; that Enceladus might be habitable; and that many stars have Earth-sized exoplanets whose insolation favors surface liquid water. These exciting discoveries make it more likely
Gaidos, Eric +2 more
core +1 more source