👉 The term "transstellar" is a technical term used in astronomy and astrophysics to describe objects that are moving at speeds greater than the speed of light (c=299,792 kilometers per second) through space or time. These objects can be stars, planets, comets, asteroids, and even large black holes. Transstellar motion occurs when a star or other object is orbiting another star at an angle that is greater than the orbital velocity of light (c).