When a mass accelerates, it emits gravitational waves that travel at the speed of light.
The axis of the ellipse of a planet's orbit rotates just a bit each orbit as seen in the precession of the perihelion of Mercury. When a mass accelerates, it emits gravitational waves that travel at the speed of light. These are two of the tested conclusions of, _FOR 10 POINTS_—what theory that describes how matter curves space, developed by Albert Einstein?
The axis of the ellipse of a planet's orbit rotates just a bit each orbit as seen in the precession of the perihelion of Mercury.
{General} theory of {relativity}