protoplanetary disk

noun 0.710

accretion disk

noun 0.698

disk

noun 0.692

microdisk

noun 0.627

disc

noun 0.591

fixed disk

noun 0.583

discoid

noun 0.571

celestial sphere

noun 0.570

galaxy

noun 0.561

planisphere

noun 0.560

compact disk

noun 0.549

discus

noun 0.543

planetary ring

noun 0.542

hard disk

noun 0.536

dwarf galaxy

noun 0.530

floppy disk

noun 0.530

disco ball

noun 0.525

orbit

noun 0.518

diskette

noun 0.518

compact disc

noun 0.515

photosphere

noun 0.514

planetary system

noun 0.512

deep space

noun 0.510

disco

noun 0.509

dwarf spheroidal

noun 0.505

spiral arm

noun 0.504