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A comprehensive and updated list of the most massive and smallest objects in the Solar System, sorted by radius and mass. Includes planets, dwarf planets, moons, asteroids, comets, and trans-Neptunian objects, with graphs, notes, and references.
Learn about the Sun and the objects that orbit it, including the eight planets, the nine dwarf planets, and the small bodies such as asteroids, comets, and moons. Explore the formation, evolution, and features of the Solar System and its place in the Milky Way galaxy.
This web page provides a comprehensive list of Solar System objects by orbit, from the Sun to the Oort cloud. It includes planets, dwarf planets, moons, asteroids, comets, and other small bodies, as well as their names, sizes, and features.
Jupiter is the largest planet in the Solar System, with a mass 317.8 times that of Earth. Its temperature ranges from 88 K (−185 °C) at the cloud tops to 165 K at the surface, depending on the pressure and altitude.
A table of examples of lengths in different orders of magnitude, from the size of the universe to the diameter of a proton. The smallest measurement is 10−13 cm, which is about 100,000 times smaller than a human hair.
Mercury is the smallest and innermost planet in the Solar System, with a highly elliptical orbit and a large iron core. Learn about its physical characteristics, orbit, rotation, surface features, history of observation, and more from this comprehensive article.
A planet is a large, rounded astronomical body that orbits a star or stellar remnant. Learn about the history, theory, and diversity of planets, from the eight in the Solar System to the thousands of exoplanets discovered outside it.
Pluto is the ninth-largest and tenth-most-massive object to orbit the Sun, with a diameter of 2,376.6 ± 1.6 km. It has five moons, including Charon, which is half its size, and was visited by New Horizons in 2015.