In 2010, Setiadi et al. analyzed histological sections of lymph nodes looking at spatial densities of B and T cells.

Determination of the spatial density of H and dense gas mass in several galaxies with varying luminosity (see Subsequent Discoveries for list of galaxies).

A region of space twenty thousand light-years wide in which spatial density is such that transporters do not function and warp travel is limited.

The high spatial density of cones along with the absence of blood vessels and non photosensitive neurons accounts for the high visual acuity capability at the fovea.

Explosive velocity is increased with smaller particle size (i.e. increased spatial density), increased charge diameter, and increased confinement (i.e. higher pressure).

Memory for the properties of stimuli such as roughness, spatial density, and texture involves activation of the parietal operculum.

For a given area on the sky, or more specifically the celestial sphere, the spatial density of stars (ρ) depends only on distance.

Concentrated poverty refers to a spatial density of socio-economic deprivation.

Starting in late 1968, Donald Kessler published a series of papers estimating the spatial density of asteroids.

The actual spatial density of asteroids in these gaps does not differ significantly from the neighboring regions.