This is definitely one of the most exciting mods that have come out of the Factorio's fan community.
As with any other premium mod, this one costs a lot of resources, and takes about a minute to craft. You also need a Rocket Silo to be able to send it into space. But when the thing finally gets there, there is no escape for your enemies.
The ion blast itself deals about 2,000 explosion damage and another 500 impact damage.