It's currently one of my favorite games. So, I may be biased in saying this but it's pretty fucking awesome.

If you are familiar with Factorio, it's basically that on a huge scale. Think Factorio, but 3D, and you can fly from one planet to another. A normal game has 64 stars in a cluster(seed) and you can eventually travel to all of them. Every star has at least 1 planet, but most have 3-5, that you can build factories on. You get full water planets, planets with lava lakes, tropical planets, continental planets with water, sulfur oceans, atmosphere, no atmosphere, etc. You have white and red dwarfs, red giants, F, B, and O type stars, etc. Each seed even has a neutron star and a black hole that each have a planet(super rare ores).

So the game basically starts out very Factorio, If you've plays a factory game, you are good to go for the most part. But the game flips the script once you need 2 specific resources that can't be found on your starter planet. So you have to fly to the other planets in your starter system. Then you get to interplanetary logistics, where you can start shipping things from one solar system to another. This is the trains of the game, and this is when the game opens way up. In the end, you are pulling in resources, and utilizing factories in 7-20 star systems to make science for research and to eventually make an actual Dyson Sphere, which are massive and a testament on just how big this game is thematically.

TL:DR; It's Factorio in space, huge galactic scale, and makes my brain go brrrrrr. The systems are probably simpler than Factorio for the most part.

Oh, and you can "fly" into a black hole. You really can't but you can get close to it and look out and it has a graphical "tunnel" type effect.