- How planets are formed - Grow from nebula -> protostar -> coagulation -> planetesimal -> protoplanet through accretion -> create atmosphere -> - Can be used for [[Digital life solar systems]] formation - > **Clearing the Orbit**: As protoplanets grow, their gravitational influence increases, allowing them to attract more material and clear out their orbital path of smaller debris. - > Planets can also migrate from their original orbits due to gravitational interactions with the disk or other planets - Can also have exoplanets