Posted: Sep 24, 2018 2:58 am
However, add an actual byproduct or product of life itself (methane or ammonia), methane and ammonia
Um there are non living sources for methane
But detecting lots of methane on Mars would not be convincing evidence of life by any stretch. The gas can also be produced by abiotic processes, such as the degradation of interplanetary dust particles by ultraviolet light and interactions between water and rocks.
ยง3. FROZEN AMMONIA (NH3)
Submillimeter observations have shown that NH3 is one of the most abundant gas-phase molecules in dense clouds (see Cesaroni et al. 1994) where models suggest that NH3 should be formed in the gas phase (see Scott, Freeman, & McEwen 1997). At the low temperatures typical of dense clouds (T<50 K), NH3 should freeze onto grains very efficiently (Sandford & Allamandola 1993). The presence of solid state NH3 is implied by the fact that gas phase NH3 is enhanced in warmer cloud regions, where it is posited to be subliming from ices (see Cesaroni et al. 1994).
https://en.wikipedia.org/wiki/Hypotheti ... ochemistry
http://iopscience.iop.org/article/10.10 ... .text.html
If you had some basic science education and reading you would know these things and not face plant so frequently.
