the.com/cosmic dust
the universe's exhaust, and also, technically, some of your building materials.
means microscopic solid particles scattered through space, leftover from stars, comets, and planet formation.
from astronomers first noticed it blocking starlight in dark patches of the milky way, dubbing those gaps 'coalsacks' before realizing the shadow was fine grains, not empty voids.
daily fallearth gains ~50 tons of it per day
star stuffforged in dying stars, seeds new solar systems
you contain ityour body's heavier elements trace back to it
size checkgrains rival smoke particles, not sand