Draft:Lyfe (astrobiology)
Submission declined on 5 May 2025 by KylieTastic (talk).
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Lyfe is a proposed name for category of physical systems that exhibit all of the four processes described below. Life (on Earth) is a familiar, concrete example of lyfe, however the definition is specifically constructed to also include "life as we don't know it", particularly (but not exclusively) in the astrobiological context.[1]
The four processes of lyfe are:
- Dissipation – exergonic processes that reduce free energy
- Autocatalysis – the ability to grow exponentially in ideal conditions
- Homeostasis – the ability to maintain key internal variables within ranges of ideal set points
- Learning – the ability to record information and carry out actions that feed back positively on its survival
For life on Earth, these processes are implemented as follows:[1]
- Dissipation – setting up and exploiting ATP / ADP disequilibrium to perform useful work
- Autocatalysis – cellular replication in resource-abundant conditions
- Homeostasis – cellular homeostasis
- Learning – e.g. Darwinian evolution
References
[edit]- ^ a b Bartlett, Stuart; Wong, Michael L. (2020-04-16). "Defining Lyfe in the Universe: From Three Privileged Functions to Four Pillars". Life. 10 (4): 42. Bibcode:2020Life...10...42B. doi:10.3390/life10040042. ISSN 2075-1729. PMID 32316364.
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