These locations are located close to the primary star of every star system. These locations spawn a variety of NPCs. The most commonly spawned NPC types are traders, freighter convoys, smugglers, bounty hunters, pirates, wanted, and security vessels.
The rewards here are higher but equally the NPC's are harder than the Nav Beacons. You DO NOT need to join a faction here. You simply target other ships, scan them and if one of them is wanted you take them out and, if they have cargo, steal their haul which you can sell on the black market. These areas, along with Nav Beacons, are full of pirates and bounty hunters. A Resource Extraction Site outside of a planetary ring is far less likely to contain NPCs.
What is found in these locations varies. They may contain squadrons of pirates, large 'wanted' cargo vessels (which you can destroy and steal the cargo without becoming wanted yourself) and sometimes just empty space with low value cargo laying around. Typically these areas have more than one bad guy, so you can visit these locations without being attacked (as long as you don't have cargo) and have a look around, but bounty hunting or piracy at these sites may require a combat focused ship due to the random nature of the encounter (there may be Anacondas!).
Assassination missions require you to visit these sites in order to locate the target. Usually you will find a damaged trade convoy that will tell you the last known location of the target, but are usually no more specific than a system.
Weak signal sources *tend* to imply that few vessels are present. These most times contain salvageable cargo, almost always illicit and must be sold at black markets. Some missions require you to investigate these sites and locate specific items adrift in space.
Strong signal sources *tend* to imply that many vessels are present. Be aware of elevated risk when investigating strong signal sources. Flying as a wing may help: there’s normally safety in numbers.
Traders in large freight ships can be found here. They will purchase any luxury goods (currently only Performance Enhancers) you have in your cargo bay.
At this location, Basic Medicines are sought and can be sold for a good price. "Seeking Meds" appear, if a faction is in state "Outbreak" (see also Faction State).
Sometimes seen near conflict zones and in systems in a state of War or Civil War. Similar to 'Seeking Meds' only in this case weapons are the items being sought. Further investigation is needed to ascertain if armour and all weapon types can be sold at these locations