Results 41 to 50 of about 5,545 (213)
Nonphotosynthetic Pigments as Potential Biosignatures [PDF]
, 2015 Previous work on possible surface reflectance biosignatures for Earth-like planets has typically focused on analogues to spectral features produced by photosynthetic organisms on Earth, such as the vegetation red edge.
Cockell, Charles S +5 more
core +3 more sources
, 2023 The search for extraterrestrial life centres on the search for ‘biosignatures’. Yet there is little agreement within the scientific community with respect to what exactly it is for something to be a biosignature.
Christopher Cowie, Cowie, Christopher
core +1 more source
Carbon and sulfur isotope biosignatures in Mars-analogue hydrothermal environments [PDF]
, 2023 The study of terrestrial environments that bear similarity to Mars provides valuable information for interpreting data from missions, including how to find evidence of relict life on the red planet.
Moreras Martí, Arola
core +1 more source
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
Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets
, 2014 We present a new method to probe atmospheric pressure on Earth-like planets using (O-O) dimers in the near-infrared. We also show that dimer features could be the most readily detectable biosignatures for Earth-like atmospheres and may even be detectable
Misra, A. +3 more
core +1 more source
A Plasma 5-Marker Host Biosignature Identifies Tuberculosis in High and Low Endemic Countries
Frontiers in Immunology, 2021 Background: Several host inflammatory markers have been proposed as biomarkers for diagnosis and treatment response in Tuberculosis (TB), but few studies compare their utility in different demographic, ethnic, and TB endemic settings.Methods: Fifty-four ...
Bih H. Chendi +10 more
doaj +1 more source
A review of exoplanetary biosignatures [PDF]
Physics Reports, 2017 We review the field of exoplanetary biosignatures with a main focus upon atmospheric gas-phase species. Due to the paucity of data in Earth-like planetary atmospheres a common approach is to extrapolate knowledge from the Solar System and Early Earth to Earth-like exoplanets. We therefore review the main processes (e.g.
openaire +2 more sources
PLoS ONE, 2014 Identifying patients with Mild Cognitive Impairment (MCI) who are likely to convert to dementia has recently attracted increasing attention in Alzheimer's disease (AD) research.
Han Li +5 more
doaj +1 more source
Biosignature hide and seek [PDF]
Nature Astronomy, 2018 A new model predicts locations on the surface of radiation-blasted Europa, the ocean moon of Jupiter, where biochemical signatures of life emergent from the subsurface ocean might survive long enough for detection on the moon's changing surface.
openaire +2 more sources
Exoplanet Biosignatures: Future Directions [PDF]
Astrobiology, 2018 125 pages (double spaced), 12 figures; The paper is the fourth in a series of 5 review manuscripts of the NExSS Exoplanet Biosignatures Workshop.
Walker, Sara I. +13 more
openaire +9 more sources