Negative Mass

A new report from lead physics unit … was received today. The report included recent findings of the spontaneously appearing negative mass particles close to …. "These findings could advance the … understanding of artificial wormholes immensely as well as related subjects," reports science unit …. Threat analysis subroutines suggest bringing fleets home until the source of this new and untested material can be determined.

The command below will trigger the "Negative Mass" event in Stellaris:

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

• Fascinating.
  • Gain modifier: Harvesting Negative Mass

Stellaris events fire in chains — one event leads to the next. Here is how Negative Mass (colony.9810) connects.