Are Thargoids ammonia-based life or do they just live on worlds with ammonia atmospheres? Drew's summary of the lore isn't clear on that. What would ammonia-based mean in this context anyway? I mean humans are described as carbon-based life, not water-based or oxygen-based.
That we don't really know. Drew's summary was a collection of snippets from around the web. I passed him my own version which I have posted up on a thread in the Mobius group and he added a couple of missing items to his but as far as I know it's mostly just info floating on the web (I'd like but I'm on my work comp and it doesn't like that forum's link). If I was to guess more than likely Thargoids would not be carbon based lifeforms because Ammonia dissolves carbon so more than likely they would have to be something else that resists ammonia's natural acidic nature perhaps silicon?
Here's an interesting excerpt on what an Ammonia planet might be like: "A biosphere based on ammonia would likely exist at temperatures or air pressures that are extremely unusual in relation to life on Earth. Life on Earth usually exists within the melting point and boiling point of water at normal pressure, between 0 °C (273 K) and 100 °C (373 K); at normal pressure ammonia's melting and boiling points are between −78 °C (195 K) and −33 °C (240 K). Chemical reactions generally proceed more slowly at a lower temperature. Therefore, ammonia-based life, if it exists, might metabolize more slowly and evolve more slowly than life on Earth.[44] On the other hand, lower temperatures could also enable living systems to use chemical species which at Earth temperatures would be too unstable to be useful.[40]
Ammonia could be a liquid at Earth-like temperatures, but at much higher pressures; for example, at 60 atm, ammonia melts at −77 °C (196 K) and boils at 98 °C (371 K).[32]" Ammonia and ammonia–water mixtures remain liquid at temperatures far below the freezing point of pure water, so such biochemistries might be well suited to planets and moons orbiting outside the water-based habitability zone. Such conditions could exist, for example, under the surface of Saturn's largest moon Titan."
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Vespa is the Italian word for Wasp. It's called that way because it has a wasp like shape if you look at it from the side.
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The more I read about this... the more I'm starting to think Thargoids = Tholians but...