Asendust

Asendust is a fictional material used in science fiction settings to denote a fine, particulate substance with distinctive physical or energetic properties. It is not a real-world chemical or mineral. The term appears across various works, where its exact composition and behavior differ, but commonly it is described as a high-surface-area powder with energy-generating or catalytic capabilities.

In fictional economies, asendust can function as a power source, fuel, or reagent for exotic technologies. It may be mined from asteroid regolith, volcanic vents on remote moons, or synthesized in laboratories. Processing often involves milling, purification, or nanostructuring to achieve stability and reactivity. The substance can be volatile or reactive with moisture or air, requiring specialized containment.

Properties and variations: some portrayals emphasize luminescence or unique optical properties; others describe superconducting or magneto-thermal behavior. In others, it acts as a pervasive contaminant that interferes with sensors.

Safety and regulation: narratives sometimes treat asendust as hazardous to inhale; handling protocols may require sealed containers, dust masks, inert atmospheres, and explosion-proof equipment due to dust explosions or exothermic reactions.

Cultural and fictional roles: as a plot device, it enables rapid energy transfer, propulsion, or stealth; it may be scarce, expensive, or guarded by monopolistic corporations.

Since it's fictional, creators may provide in-universe glossaries or technical datasheets to define its properties for that work.