Black hole

A black hole is a star that has undergone - and some say is still undergoing - collapse. In Solar Storms, black holes are sometimes found instead to be mirror stars, which are 'merely' stars composed entirely of mirror matter.

Black holes can be used, to a limited extent, to form a special form of stargate, sometimes called a blackgate, to reach another extremely distant black hole. In addition to providing a cosmic shortcut, blackgates are also advantageous in that they are not required to be set up at the remote end - merely be extremely certain of one's calculations. Monstrous holes, such as A-star in the center of the Milky Way, can even be used to reach other galaxies. A regalic artifact called a singulus can be used to make a blackgate to a massive star, instead, though only one such currently exists - in the Sirian system.