What percentage of the Solar System's mass is made up by planets?

The percentage of the Solar System's mass that is made up by planets is approximately 0.14%. The vast majority of the mass in the Solar System is concentrated in the Sun, which accounts for about 99.86% of the total mass. The planets, despite being significant bodies within the Solar System, are relatively small in mass compared to the Sun and thus only account for a fraction of the total mass.

This understanding is crucial when considering the overall structure and composition of the Solar System, as it highlights the dominance of the Sun in terms of mass and gravitational influence. The figures related to the planets' mass reflect their individual contributions, which include all eight major planets, but still amount to just a small part of the complete mass distribution of the Solar System.