Extremophilia

… and … crew have made a surprising discovery on …: the molten planet is home to an exotic array of extremophilic microorganisms! These bacteria live deep inside the volcanic vents that scar the planet, thriving in the extremely high temperatures produced there. This unprecedented find is our first known example of organic lifeforms flourishing on molten planets. Moreover, the extremophiles on … are in fact responsible for the rare gases detected in its thin atmosphere, producing these valuable compounds as a byproduct of their metabolic processes.

The command below will trigger the "Extremophilia" event in Stellaris:

When this event fires, you can choose between the following option:

• Fascinating.
  • Society: +None to None

Stellaris events fire in chains — one event leads to the next. Here is how Extremophilia (distar.145) connects.