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originally posted by: Blue Shift
originally posted by: 0bserver1
I mostly ask myself what is the definition for life as we know it on Earth?
Eat, poop, reproduce, repeat.
originally posted by: ArMaP
They basically are saying that they do not know of any non-biological process that can produce phosphine, so they assume it's from a biological source.
Obviously, it could be from a process they do not know, specially when we are talking about a planet we know very little about, like Venus.
I believe it’s the AMOUNT of Phosphine found
Phosphine is used as a dopant in the semiconductor industry, and a precursor for the deposition of compound semiconductors. Commercially significant products include gallium phosphide and indium phosphide.
originally posted by: charlyv
It would be best to hold off on life being required to produce Phosphine (PH3).
- Courtesy of WP
Philippe Gengembre (1764–1838), a student of Lavoisier, first obtained phosphine in 1783 by heating phosphorus in an aqueous solution of potash (potassium carbonate).
Perhaps because of its strong association with elemental phosphorus, phosphine was once regarded as a gaseous form of the element, but Lavoisier (1789) recognised it as a combination of phosphorus with hydrogen and described it as phosphure d'hydrogène (phosphide of hydrogen).
It was discovered using a mostly non-organic discovery method (except for the addition of carbon), as shown.
So, Venus is hot, and carbon,phosphorus and potassium carbonate is most likely available. Water could be available as well, of course in a gas, so.... jury out until official paper states why phosphine is most likely a gas produced by life (in the context of Venus).