Alone in space, just a planet without a star. An icy ball hurtling through space, a rouge planet. It is also known as a free-floating planet or an isolated planetary mass object. I’ll call it a rouge planet because it sounds cooler. Rouge planets are caused in two ways, one formed in a nebula and destined to wander the world alone, or brought up like a regular planet with a star until they get ejected away through the gravity of other planets or asteroids. And there are a lot of these planets. In our galaxy alone, there are billions to trillions of rouge planets, yeah we haven’t really narrowed it down. Later on, these planets have a sad fate, just floating and floating in interstellar space, but if they are lucky, they could encounter a planetary system. And in this rare outcome, three possibilities are there for the rouge planet. First, it could remain unbound, just passing by, or it could be weakly bound to the star where it is orbiting the star weakly and eventually, the planet could be ejected back to interstellar space, and finally, it can replace another planet in that system and take its place. Out of these three outcomes of this rare possibility, the planet will most likely be bounded by the star weakly. Created from a disk or was once part of a star, these rouge planets are alone in a big universe, but they can meet others. (Rarely)
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