Natural Philosophy of Protoplanetary and Planetary Discs: On the Origin and Evolution of Life
Year: 2025
Type: preprint
Abstract: This paper examines the four pivotal and most contentious issues within the field of abiogenesis by analyzing the life-originating processes centred on protoplanetary and planetary discs. These include: 1. Geological environment; 2. Source of nutrients/initial molecules; 3. Source of energy; 4. RNA world versus metabolic world: which came first? To date, scientists have been unable to reach a consensus on these questions. Regarding geological environment, the distinct conditions within the inner, middle, snow line, and outer regions of the protoplanetary discincluding solar, cosmic, and isotopic radiation-along with the exchange of dust and gases between these zones, provided an exceptional reaction platform for prebiotic chemistry. Concerning the origin of life's food/precursor molecules, the protoplanetary disc-the stellar gas
Author: XIAOMING LI
Institution: University of Toronto
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4414401582
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