The Boomerang Nebula, the coldest nebula in Terragen space
This nebula, 5000 ly from Sol, at the edge of Terragen Space, was observed by Information Age astronomers, and found to be colder than the Cosmic Background temperature. This was caused by the expansion of gases at its heart, like fluid escaping from an aerosol can. This planetary nebula was the coldest naturally occurring location in the Terragen Sphere at that time.
The cold-adapted Ghauetti tweaks from Ihikkk harboured ambitions to colonise this nebula, but it was too far away. By the time the outermost wave of Terragen Expansion reached this location, the nebula had ceased to expand and was no longer visible.
In 9600 AT, a population of ultra-cold vecs known as the Condensators established a research station in the Hat Nebula, a young planetary nebula in Centaurus with similar characteristics, which they intend to modify in various ways to create even colder temperatures.
Laughter Nebula - Text by Anders Sandberg One of the five nebulae in the volume close to the War and Peace Nebula named after the Rational Virtues (Laughter, Curiosity, Zeal, Reflection and Compassion) in Konensis Mysticism.