Our star has one issue and that it is getting bigger and running out of hydrogen i think? So i came up with an idea. Basically have machines that replenish the hydrogen and make the solar atmosphere smaller.
And they can be powered by the sun so they have a unending cycle of power. the only problem is overheating and that wave of sunlight forgot the name. Sun burst or something. The wave that makes electronics not work.
If you can’t get to the sun than just do something like echo location with solar energy. Send Hydrogen back to it.