## Einstein's Equations

A set of "tensor" equations Einstein devised to describe how mass warps spacetime. The set of equations may be written as $$G = 8 π T$$, where both $$G$$ and $$T$$ each represent a set of ten quantities. The $$G$$ quantities represent the warping of spacetime, while the $$T$$ quantities — the "Stress-Energy tensor" represent the mass.

## Inspiration

In the 1st year of the period Chih-ho, the 5th moon, the day chi-ch'ou, a guest star appeared...

Yang Wei-T'e, Imperial Astronomer of the Sung Dynasty, 1054 A.D.