Arachnid Nebula

The Arachnid Nebula is an interstellar dust cloud located some distance from the planet Vulcan.

In 2151, the Enterprise (NX-01) and the Vulcan transport vessel, Vahklas conducted a survey of the nebula. Following the conclusion of the survey it was discovered that the nebula was over 8 million kilometers in diameter and was composed of over 20 million cubic meters of disodium, and small traces of ethylchlorate. (ENT episode: "Fusion").