Figure 1. Increasing cosmic redshift vs Decreasing past cosmic radius

From

Toy model of Evolving Spherical Cosmology with Flatness, Angular Velocity, Temperature and Redshift

U.V.S. Seshavatharam, S. Lakshminarayana

Frontiers of Astronomy, Astrophysics and Cosmology. 2015, 1(2), 90-97