Results 41 to 50 of about 925,381 (311)

Prebiotic Chemistry of Pluto [PDF]

Astrobiology, 2019
We present the case for the presence of complex organic molecules, such as amino acids and nucleobases, formed by abiotic processes on the surface and in near-subsurface regions of Pluto. Pluto's surface is tinted with a range of non-ice substances with colors ranging from light yellow to red to dark brown; the colors match those of laboratory organic ...
Cruikshank, D.P., Materese, C.K., Pendleton, Y.J., Boston, P.J., Grundy, W.M., Schmitt, B., Lisse, C.M., Runyon, K.D., Keane, J.T., Beyer, R.A., Summers, M.E., Scipioni, F., Stern, S.A., Dalle Ore, C.M., Olkin, C.B., Young, L.A., Ennico, K., Weaver, H.A., Bray, V.J.   +18 more
openaire   +4 more sources

Phosphorus mineral evolution and prebiotic chemistry: from minerals to microbes

Earth-Science Reviews, 2021
Phosphorus availability is considered a limiting factor in many scenarios for the origin of life. The concentration of P in environments of prebiotic interest will have been governed by the available mineral sources of P on the early Earth.
C. Walton, O. Shorttle, F. Jenner, H. Williams, Joshua J. Golden, S. Morrison, R. Downs, A. Zerkle, R. Hazen, M. Pasek   +9 more
semanticscholar   +1 more source

A robotic prebiotic chemist probes long term reactions of complexifying mixtures

Nature Communications, 2021
The transition of prebiotic chemistry to present-day chemistry lasted a very long period of time, but the current laboratory investigations of this process are mostly limited to a couple of days.
Silke Asche, Geoffrey J. T. Cooper, Graham Keenan, Cole Mathis, Leroy Cronin   +4 more
doaj   +1 more source

Chirality in Organic and Mineral Systems: A Review of Reactivity and Alteration Processes Relevant to Prebiotic Chemistry and Life Detection Missions

Symmetry, 2022
Chirality is a central feature in the evolution of biological systems, but the reason for biology’s strong preference for specific chiralities of amino acids, sugars, and other molecules remains a controversial and unanswered question in origins of life ...
Carina Lee, J. Weber, L. E. Rodriguez, R. Sheppard, L. Barge, E. Berger, A. Burton   +6 more
semanticscholar   +1 more source

A physicochemical orthophosphate cycle via a kinetically stable thermodynamically activated intermediate enables mild prebiotic phosphorylations

Nature Communications, 2021
Transfer of scarce phosphate to organic molecules is a significant challenge for prebiotic chemistry. Here authors show a prebiotic physicochemical cycle to activate orthophosphate and via a kinetically stable, thermodynamically activated molecule ...
Oliver R. Maguire, Iris B. A. Smokers, Wilhelm T. S. Huck   +2 more
doaj   +1 more source

Beyond prebiotic chemistry [PDF]

Science, 2016
What dynamic network properties allow the emergence of life?
Cronin, Leroy, Walker, Sara Imari
openaire   +1 more source

The Effects of Iron on In Silico Simulated Abiotic Reaction Networks

Molecules, 2022
Iron is one of the most abundant elements in the Universe and Earth’s surfaces, and undergoes a redox change of approximately 0.77 mV in changing between its +2 and +3 states.
Sahil Rajiv Shahi, H. James Cleaves
doaj   +1 more source

Geochemical and Photochemical Constraints on S[IV] Concentrations in Natural Waters on Prebiotic Earth

AGU Advances, 2023
Aqueous S[IV] species (HSO3−, SO32−) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of ...
Sukrit Ranjan, Khaled Abdelazim, Gabriella G. Lozano, Sangita Mandal, Cindy Y. Zhou, Corinna L. Kufner, Zoe R. Todd, Nita Sahai, Dimitar D. Sasselov   +8 more
doaj   +1 more source

Prebiotic Reaction Networks in Water

Life, 2020
A prevailing strategy in origins of life studies is to explore how chemistry constrained by hypothetical prebiotic conditions could have led to molecules and system level processes proposed to be important for life’s beginnings. This strategy has yielded
Quoc Phuong Tran, Zachary R. Adam, Albert C. Fahrenbach   +2 more
doaj   +1 more source

Cosmic dust fertilization of glacial prebiotic chemistry on early Earth [PDF]

Nature Astronomy
Earth’s surface is deficient in available forms of many elements considered limiting for prebiotic chemistry. In contrast, many extraterrestrial rocky objects are rich in these same elements.
C. Walton, J. Rigley, A. Lipp, Robert Law, M. Suttle, M. Schönbächler, M. Wyatt, O. Shorttle   +7 more
semanticscholar   +1 more source