cosmocide

Etymology

From cosmo- + -cide.

Why this word is great

COSMOCIDE — [Noun] The destruction of planet Earth or the universe, especially as a result of human activity. From Greek kosmos ("world, universe") and Latin -cidium ("killing, destruction"). Unlike "omnicide" (which erases all life) or "ecocide" (which ravages ecosystems), cosmocide is the ultimate act of annihilation—not just the silencing of voices, but the shattering of the stage itself. It is the last star winking out, the cold equations of physics unwritten, the cosmic clockwork grinding to a halt in the void. A silence so profound it swallows even the memory of sound.

noun

The destruction of planet Earth, especially as a result of human activity.“The Worldwatch scientists said — as many others do — that we are already well on the way toward ecological cosmocide.”
The destruction of the universe.“The removal of all potential—both good and evil—from the universe would have dire consequences. It would be both effective cosmocide—the destruction of a cosmos which was/is energized by holy potential—and, as well, akin to Divine suicide, since holy quest for potential is at the epicenter of the Divine.”