General Relativity : Einstein vs. Newton

A visualization of two physical models of gravity: Newtonian Gravity and Einstein's General Relativity.

Based on illustrations from the book "Relativity Visualized" by Lewis Carroll Epstein:
https://www.physics.ucla.edu/demoweb/demomanual/modern_physics/principal_of_equivalence_and_general_relativity/curved_spacetime.html
https://archive.org/details/L.EpsteinRelativityVisualizedelemTxt1994Insight/mode/2up
and from the doctorate thesis "Gravity Illustrated" by Rickard Jonsson:
http://www.relativitet.se/Webtheses/tes.pdf

An interactive diagram of curved space-time at a larger scale, including the interior of the massive body:
http://www.adamtoons.de/physics/gravitation.swf