Spacetime curvature

Model describing the space-time distortion caused by different gravitational forces. In the presented model, the Sun, a neutron star, and a black hole are included. On the walls supporting the model, one features Einstein's formula explaining the model, while the other displays a photo of Einstein with a quote attributed to him.   The Sun, represented by the orange ball, is inserted via a slot mechanism. The neutron star is placed by forcing it into its designated housing, while the black ball, representing the black hole, needs to be glued to remain in position.