Lightshow

Science Officer … reports that the luminous waves coursing through the ice that blankets … are of alien origin. Some ancient battle has deposited scattered wreckage from an alien fighter on the frozen planet, and only the exposed core of its main weapons remains intact. It seems this alien race used lasers similar to the ones currently in use by … fleets, and the fizzling innards periodically discharge low-powered beams into the ice of …. The planet's harsh climate prevents the lasers from actually melting the ice, allowing the chilly matrix to act as a brilliant prism.

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

When this event fires, you can choose between these 2 options:

• Interesting.
  Available only if Requires technology: Blue Lasers.
  • +100 leader experience
• We could use that technology.
  Available only if Must not have technology: Blue Lasers.
  • Gain technology: Blue Lasers

Stellaris events fire in chains — one event leads to the next. Here is how Lightshow (anomaly.235) connects.