the.com/protoplanetary
a disk of leftover dust and gas politely arranging itself into future worlds.
means describes the swirling disk of gas and dust around a young star from which planets eventually form.
from from greek protos, meaning first, plus planetary — coined by astronomers describing the earliest, pre-planet stage of a solar system's disk.
disk lifespantypically dissipates within a few million years
our originthe sun's own disk made everything you stand on
visible proofhubble and alma have photographed several directly
clumping processdust grains stick together via static, not gravity, first