When you need to call down the thunder to deal with those pesky biters, launch a rocket with an ion cannon into orbit and show the bugs who's boss.
Mods introducing new content into the game.
New ways to deal with enemies, be it attack or defense.
if you have bobwarfare rebalancing mod, ion cannon can never be researched, becouse the tech tree places it bellow an infinite tech, therefor you can never get pass that
Thanks for the report, I'll work to fix this for the next update.
Fixed for v1.7.1, should release Soon™.
Is there a command to give you the finished research?
Enable the console /c game.player.force.recipes["orbital-ion-cannon"].enabled=true /c game.player.force.recipes["ion-cannon-targeter"].enabled=true
Don't forget the cheat will not activate on the first use, the game will tell you, you are cheating and ask you to enter the command line again.