Results 71 to 80 of about 7,177 (211)
The Planetary Science JournalTelescope missions are currently being designed that will make direct imaging of habitable exoplanets possible in the near future, and studies are needed to quantify the detectability of biosignature features in the planet’s reflectance spectrum.
Connor O. Metz +4 more
doaj +1 more source
Application of chemotactic behavior for life detection
Frontiers in Astronomy and Space SciencesOne excellent biosignature for the present detection of microbial life on Earth is motility, leading to its growing interest within the astrobiological community as an observable attribute that, if detected during future in situ space missions, could ...
Max Riekeles +8 more
doaj +1 more source
The O2 A-band in fluxes and polarization of starlight reflected by Earth-like exoplanets
, 2017 Earth-like, potentially habitable exoplanets are prime targets in the search for extraterrestrial life. Information about their atmosphere and surface can be derived by analyzing light of the parent star reflected by the planet.
Fauchez, Thomas +2 more
core +1 more source
Alzheimer's &Dementia, Volume 22, Issue 3, March 2026.Abstract INTRODUCTION Cerebral perfusion is implicated in Alzheimer's disease (AD), but its development in AD and mild cognitive impairment (MCI) is not well characterized. METHODS We constructed a normative model using > 12,000 arterial spin labeling MRI scans and applied generalized additive models for location, scale, and shape (GAMLSS).
Xinglin Zeng +9 more
wiley +1 more source
Nonphotosynthetic Pigments as Potential Biosignatures [PDF]
Astrobiology, 2015 21 pages, 12 figures, 5 tables.
Schwieterman, Edward W +2 more
openaire +6 more sources
Discriminating between extinct and extant life detection: implications for future Mars missions
Frontiers in Astronomy and Space SciencesThe search for biosignatures on Mars has been a high priority for astrobiology. The approach to detecting putative biosignatures has largely been focused on chemical analyses targeting predominantly extinct life.
Katherine A. Dzurilla, Bronwyn L. Teece
doaj +1 more source
A proposal for climate stability on H2-greenhouse planets
, 2015 A terrestrial planet in an orbit far outside of the standard habitable zone could maintain surface liquid water as a result of H2-H2 collision-induced absorption by a thick H2 atmosphere.
Abbot, Dorian S.
core +1 more source
Food Science &Nutrition, Volume 14, Issue 3, March 2026.Intestinal ischemia–reperfusion (I/R) injury is a life‐threatening condition with mortality approaching 50%, driven by oxidative stress, inflammatory cascades, ferroptosis, and intestinal barrier disruption that ultimately precipitates distant organ dysfunction.
Xue‐feng Zhang +6 more
wiley +1 more source
, 2002 We report spectroscopic observations (400 to 800nm, R = approx 100) of Earthshine in June, July and October 2001 from which normalised Earth albedo spectra have been derived. The resulting spectra clearly show the blue colour of the Earth due to Rayleigh
Angel +18 more
core +2 more sources
Surface‐Driven Protocell Formation in Geologically Relevant Early Earth Environment
ChemSystemsChem, Volume 8, Issue 2, March 2026.Illustration of a prebiotic early‐Earth environment showing cell‐like protocells (blue spheres) and other complex organic molecules (pink and green spheres) distributed across terrestrial surfaces and within subsurface niches. Volcanic landscapes and mineral‐rich substrates provide diverse geochemical settings for the assembly and evolution of ...
Pamela Knoll, Silvia Holler
wiley +1 more source