Stray Planets

Stray planets, also known as rogue planets, are celestial bodies that do not orbit a star and instead wander through the interstellar space. These planets are thought to have formed in a similar manner to normal planets, likely within the protoplanetary disks of stars, but they may have been ejected from their orbits due to gravitational interactions with other celestial bodies or due to the instability of their formation environments. Stray planets can vary widely in size and composition, similar to planets within a solar system, and they are of significant interest to astronomers because they can provide insights into planetary formation and the dynamics of planetary systems. The detection of stray planets is challenging, as they lack the illumination of a nearby star, but advancements in observational techniques and technology have enabled the identification of some candidate rogue planets within our galaxy.