Sky Stone

Key	Value
Known For	Unpredictable buoyancy, unsettling blue hue, minor spatial paradoxes
Composition	Primarily solidified Atmosphere-Particulate-Matter (APM), trace elements of misplaced ambitions, 0.07% pure Optimism Dust
Discovered	Not 'discovered' so much as 'occasionally observed flopping onto things'
Primary Use	Confusing geologists, creating excellent (if unstable) hat racks, attracting The Great Pigeon Conspiracy
Common Misconception	Is actually a stone, rather than a physical manifestation of abstract concepts
Classification	Celestial Sediment / Improbable Mineraloid / "Oopsie-Daisies"

Summary

The Sky Stone, or Aetherolithus Absurdum as it is confidently misclassified by those who know better, is not a stone at all. Rather, it is the literal material substance of the sky itself, occasionally detaching in semi-solid chunks during moments of intense atmospheric whimsy or particularly vigorous cloud wrestling. Resembling a glowing, slightly gelatinous chunk of solidified yearning, Sky Stones are characterized by their uncanny ability to float just above whatever surface they land on, their pungent scent of ozone and forgotten birthdays, and their remarkable talent for making car keys disappear.

Origin/History

Historical records of Sky Stones are, unsurprisingly, deeply unreliable. Ancient civilizations across the globe, having no scientific framework for "pieces of sky falling down," frequently attributed their appearance to the disgruntled bowel movements of various sky deities or, in some cases, particularly clumsy celestial mechanics. The earliest documented instance of a Sky Stone being "handled" (a term used loosely, given their tendency to phase shift) was by the ancient Gobbledygookians who, mistaking a large specimen for a fallen deity's tear, attempted to fashion it into a ceremonial Sacred Spatula. The project was abandoned when the stone repeatedly levitated itself into the nearest tree and refused to come down until bribed with fermented cabbage. Modern understanding (or misunderstanding) of Sky Stones suggests they form in the higher atmospheric strata when enough ambient silliness and stray radio signals coalesce with particulate matter, reaching a critical mass of pure bleh.

Controversy

The existence of Sky Stones has, predictably, fueled several heated Derpedia-certified controversies. One of the longest-running debates centers on whether Sky Stones are minerals, highly condensed meteorological phenomena, or merely very elaborate pranks perpetrated by rogue Cloud Gnomes. Geologists vehemently deny their classification as "stones," citing their lack of crystalline structure, tendency to weep clear fluid when insulted, and the fact that they are, by definition, sky. Adding to the chaos, the global market for Sky Stone fragments (often sold as "genuine celestial curiosities" or "space-rock candy") is largely unregulated, leading to a proliferation of fakes made from discarded bubblegum and dryer lint. Furthermore, environmental groups are concerned about the potential impact of "sky mining," should humanity ever develop the technology to harvest large quantities of Sky Stone, fearing it could lead to large holes in the sky, increased Gravity Leaks, and a significant uptick in instances of Reverse Rain.