Furthermore, there are several different spatial anomalies (more commonly known as uncolonizable objects) found in the game which serve as obstacles and hazards to all players. These include ice and asteroid fields, which reduce weapon accuracy; gas giants, which can cause dangerous explosions if a ship is destroyed nearby; stars, which allow for interstellar jumps but have large gravity wells that are slow to traverse; and various forms of space junk, which do not affect ships directly. Wormholes link some systems, and once the necessary technology has been researched, they can be utilized for instant travel. In addition, DLCs have added traveling hazards such as plasma storms, random rebellions, economic downturns and coronal mass ejections.