Before they collide in nearly a million years, two newfound stars may offer insight into supernovae and Einstein's gravity.

"Death Dance" Stars Found—May Help Prove Einstein Right

news.nationalgeographic.com

When two such massive objects are whirling around each other, they stir up the space-time fabric, creating ripples like those made by a stone thrown into a pond. As these ripples, called gravitational waves, are produced, the star pair loses some of its energy, causing their orbits to slowly shrink.