EDIT: after a more careful look at it, it seems this was done through an exploit, so it is NOT possible to reach NGC 188 yet! it is also in very poor exploration spirit to use exploits to get to a place before everyone else..
I was recently shocked at discovering that on EDSM, it seems like...
GMP Logo courtesy of Qohen Leth - Video by Obsidian Ant
Polygon article about the GMP. Charlie Hall (May 6th, 2019)
Galactic Regions & Overview Map
The Expedition Hub
History of Beagle Point & Archived Maps
The Age of Pioneers
The Distant Worlds Expeditions