the.com/circumstellar
the neighborhood a star hasn't finished decorating yet.
means describes matter — gas, dust, disks, planets-in-progress — orbiting or surrounding a star.
from latin circum (around) plus stellar (star), coined by astronomers describing the leftover material stars don't fully swallow when they form.
disk stageplanets often form from circumstellar dust disks
habitable zonea circumstellar region where liquid water can exist
time limitmost circumstellar disks vanish within 10 million years