[1] Few galaxies exist in voids; most are located in sheets, walls and filaments that surround voids and supervoids.
These filaments are often straighter than their non-void counterparts due to the lack of influence by surrounding filaments.
[4] These filaments can even be rich enough to form poor galaxy clusters.
[6] The void galaxies themselves are thought to represent pristine examples of galactic evolution, having few neighbours, and likely to have formed from pure intergalactic gas.
[7] It is theorised by many astrophysicists that void galaxies are the result of large galactic filaments being pulled by the gravity of a major super cluster out of the less densely populated areas, causing voids such as the Boötes Void to grow.