Backup your Universe Folder in your Starbound/Griaffestorage, if you want to keep it for later. And than delete the whole Stuff in the Folder 'universe', Next time you start a Game or create a new Char. The whole Universe will be new/reset. Starbound is working towards a future where wipes no longer occur, but although your characters and ships are safe, you need to back up your worlds now.The v. Enraged Koala patch will allow. If you're really attached to your planets for some reason (or if you don't like mucking around in File Explorer or its Mac equivalent, whatever that is), another way to reset the Outpost is to enter admin mode in Starbound (/admin) and then use /resetuniverseflags.
Peacekeeper stations are an addition in the 1.4 Bounty hunter themed update. Peacekeeper stations are usually found by accepting a Becoming a Peacekeeper quest at the outpost's peacekeeper poster.
Starbound Delete Universe
Peacekeeper station upgrades
How To Reset The Universe
You can always find your current assigned Peacekeeper station on map screen by clicking the Peacekeeper Symbol:
The station undergoes some upgrades during the peacekeeper quest.At first, station does not look impressive at all, it is just a rusty base within a small asteroid:
After completing the first gang storyline and capturing the gang's boss, player is instructed to proceed to new coordinates, where a newer station is built. Still unimpressive, but definitely an upgrade. Station gets a Peacekeeper Store, where you can buy unique items for Peace Credits:
Keep going up in ranks and you get a new upgrade. Now in addition to shop, you get a kitchen. Also, Peacekeeper Emblems appear here for the first time, though mighty rusty:
After third upgrade, place really starts to look better. There is a special department of Frogg's Furnishings - Peacekeeper Furnishings, with unique furniture. Also, there is a shiny Peacekeeper Emblem:
Fifth upgrade brings in a fully packed mech station with Mech Assembly Station and Mech Part Crafting Table, and additional shop - Neon Furnishings with a full set of neon signs, holotrees and Neon Peacekeeper Emblem.
Hidden treasure
On Level 4 Peacekeeper station there is a locked room on top right. Around the station there are some targets. Destroying all of them will open the door, and allow player to access the cargo inside.