Results 101 to 110 of about 11,414 (233)
Geosciences, 2020 New images from Mars rover Curiosity display millimetric, elongate stick- like structures in the fluvio-lacustrine deposits of Vera Rubin Ridge, the depositional environment of which has been previously acknowledged as habitable.
Andrea Baucon +3 more
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Hopane biomarkers traced from bedrock to recent sediments and ice at the Haughton Impact Structure, Devon Island: Implications for the search for biomarkers on Mars [PDF]
, 2004 Hopanoid biomarkers have been traced from bedrock to ice in the Haughton Impact Structure, suggesting that they represent a promising strategy in the search for life in ice deposits on Mars and other icy ...
Cockell, C. S. +4 more
core
Life-Detection Technologies for the Next Two Decades
, 2018 Since its inception six decades ago, astrobiology has diversified immensely to encompass several scientific questions including the origin and evolution of Terran life, the organic chemical composition of extraterrestrial objects, and the concept of ...
Bodas, Dhananjay +22 more
core
The Habitability of our Evolving Galaxy
, 2018 The notion of a Galactic Habitable Zone (GHZ), or regions of the Milky Way galaxy that preferentially maintain the conditions to sustain complex life, has recently gained attention due to the detection of numerous exoplanets and advances made in ...
Gowanlock, Michael G., Morrison, Ian S.
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Evaluating Biogenicity on the Geological Record With Synchrotron-Based Techniques
Frontiers in Microbiology, 2019 The biogenicity problem of geological materials is one of the most challenging ones in the field of paleo and astrobiology. As one goes deeper in time, the traces of life become feeble and ambiguous, blending with the surrounding geology.
Flavia Callefo +8 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
Biosignature False Positives [PDF]
, 2018 In our search for life - whether within the earliest part of Earth's geologic record, on planets within our solar system such Mars, or especially for extrasolar planets - we must infer the presence of life from its impact on the local or global environment. These "biosignatures," often identified from the known influence of terrestrial organisms on the
Shawn Domagal-Goldman +4 more
openaire +1 more source
Laser-fabricated cell patterning stencil for single cell analysis
BMC Biotechnology, 2017 Precise spatial positioning and isolation of mammalian cells is a critical component of many single cell experimental methods and biological engineering applications.
Jacob J. Messner +2 more
doaj +1 more source
Frontiers in Microbiology, 2017 The “Rare Earth” hypothesis—put forward by Ward and Brownlee in their 2000 book of the same title—states that prokaryote-type organisms may be common in the universe but animals and higher plants are exceedingly rare.
Stefan Fox, Henry Strasdeit
doaj +1 more source