Jonisian Nebula
The Jonisian Nebula was a planetary nebula located at coordinates 2912.7736. It had a complex structure with a core  of 0.28 light years and a density of 1.8 cubic centimeters.

In 2259, the  conducted a routine survey of the Jonisian Nebula. While there, it encountered a sentient non-corporeal lifeform speculated to be a Boltzmann brain, later named  by Rukiya. ()

Nebulae