planetarysystem
A planetary system is a gravitationally bound arrangement in which one or more planets orbit a star or stellar remnant. In most cases, the term refers to a star–planet system, though the gravitational influence of other bodies such as brown dwarfs, comets, and debris disks can shape its evolution.
The central star is often accompanied by a variety of other bodies, including planets of differing sizes
Planetary systems form from rotating molecular clouds that collapse to form a central protostar surrounded by
Planets in such systems are detected by methods including transit observations (watching the star dim as a
As of the 2020s, thousands of exoplanets in hundreds of planetary systems have been confirmed, indicating that