The nonlinear evolutionary dynamics of gravitational instability in a complex self-gravitating viscoelastic nonthermal polytropic astrofluid is semi-analytically investigated on the Jeansian scales of space and time. The key effects out of fluid buoyancy. thermal fluctuations. and volumetric expansions are concurrently considered and carefully included. https://countryscenesaddleryandpetsuppliers.shop/product-category/jumping-saddle/