Star Tunnel
this was one of the more unusual, interstellar phenomena that occurred in several nebulae across the galaxy. A star tunnel was formed from a set of stars that rotated around a powerful energy source. They stars were drawn to the gravity of the energy source, which spewed its energy outward in a column. The stars then circulated around this column of energy, creating the physical "tunnel." Because these phenomena occurred across light-years of space, they often drew in gases from nearby nebulae, and could even siphon off the atmosphere of neighboring planets, creating the visual "tunnel" by spinning multi-colored gases around the column of energy. They were extremely difficult to fly through, as the concentrated energies of the star tunnel's core and its constituent stars caused devastating problems to many starship systems. Compounding these problems, gravitic changes caused intense variations in shear and orientation, which could literally tear a starship apart.