Radiolaria

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Vex Radiolaria mind fluids
Overview
Objectives:	Be the only being in existence
Encountered:	Destiny Destiny 2

"Look! A waterfall of Vex...milk. Yes, Vex Milk."

— Ghost

Radiolaria, referred to by some Guardians as "Vex Milk", are microscopic silica-based organisms that make up the biological component of Vex constructs. Massive concentrations of radiolaria are often found on planets transformed into machine worlds.

History

In the state preceding the universe as we know it, the Vex first existed as abstract patterns, which escaped to our universe when the Light and Darkness began warring with one another. These patterns were able to influence the chemistry within the liquid cores of comets, creating the precursors of a physical substrate to house their consciousness. These comets then rained down on lifeless planets, and the first radiolaria evolved from the chemicals within.

Radiolaria were first encountered by humanity after the Collapse when the Exodus Black crash-landed on Nessus, when the ship's AI Failsafe observed them terraforming the planetoid.

Biology

Radiolaria are microscopic organisms that are typically suspended in a briny white, luminescent fluid. They are found on planets transformed by the Vex, such as Nessus. They control the mechanical chassis of the Vex from a container usually found within their chests. On some Vex units this "brain" is located elsewhere; for example, behind the eye on Harpies or in the abdomen on Cyclopes.

When radiolarian fluid comes into contact with non-Vex matter, it will attempt to turn the host into a Vex unit. Examples include Kabr, the Legionless, who drank from an Oracle and was transformed into a Vex, and Asher Mir, who lost an arm to radiolarian "infection". Another example comes from stepping in Radiolaria in-game, as it will slowly kill you.