Nebular a. : Of or pertaining to nebulae; of the nature of, or resembling, a nebula.

Example:
How does the Nebular theory account for the difference in planets?

Taxonomy
disk, accretion, planetesimals, mass, protoplanetary disk, stage, protostar, gas, Astrophysical Journal, embryos, giant planets, planets, model, bodies, star, accretion disks, nebular hypothesis, harvard.

Defination from the web:
nebular hypothesis is the most widely accepted model explaining the formation and evolution of the Solar System. ... However the minimum mass nebular, which is capable of terrestrial planet formation, can only form 1–2 Earth mass cores at the distance of Jupiter ...