Explosive Horizon

Detailed observation of … has revealed the cause of the meteorological heat spikes. Geothermal vents and geysers across the surface are ejecting highly flammable gasses which then accumulate in the atmosphere. Electrostatic discharges then act as an ignition catalyst, causing explosive weather fronts that ravage the skies of this world. These reactions have given our … new insights into thermodynamic combustion, with applications towards our own fleet's propulsion systems.

The command below will trigger the "Explosive Horizon" event in Stellaris:

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

• Fascinating.
  • Add deposit: +2
  • Engineering: +None to None

Stellaris events fire in chains — one event leads to the next. Here is how Explosive Horizon (extreme_frontiers.420) connects.