## Inspiral

The gradually-shrinking orbit of a binary system. As the pair of stars in the binary orbit each other, they give off energy in the form of gravitational waves. This lost energy draws them closer in their orbit — eventually resulting in a Merger.

## 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.