This is believed to be the farthest reaches of the Sun's gravitational pull that measurably affects other objects. The Oort cloud is an immense cloud at the outer limits of the solar system. Other Features of the Solar System Oort Cloud Some examples of small bodies in the Solar System include asteroids, meteoroids, and comets. Small Solar System Bodies Main article: Solar System/Terrestrial Bodies#Small Bodies This great distance is a potential reason that no natural satellites have been found they would be way too dim. Should it have been at the aphelion, it would remain unknown for thousands more years. Its discovery was mostly luck, as it was near its perihelion and at a (barely) detectable magnitude. This object has no known natural satellites. Sedna's diameter is 995 miles, or about 1,600 kilometers. Its orbit is also highly eccentric, with a perihelion in the outer Kuiper Belt and an aphelion possibly in the inner Oort Cloud. Sedna is a plutoid candidate with an orbit lasting about 11,518 Earth years. Some objects in the solar system are not officially considered dwarf planets or plutoids, but are large enough to be prime candidates for plutoid status. They are Pluto, Haumea, Makemake, and Eris. As of right now, there are four official Plutoids. Any Dwarf planet that orbits within Neptune is considered still considered a dwarf planet. In other words, it must orbit outside of Neptune. To be considered a Plutoid, a dwarf planet must have a semi-major axis greater than that of Neptune. In addition to that it cannot be a satellite of a non-stellar body. The definition of a Dwarf Planet is a planet with enough of a gravitational pull to keep a spherical shape, but not strong enough to 'clear the neighborhood', which means that any object that comes close to the planet, it either 'pushes away' or 'pulls into an orbit'. The outer planets are those beyond the asteroid belt: Jupiter, Saturn, Uranus, and Neptune.Дwarf Planets Main article: Solar System/Terrestrial Bodies#Dwarf Planets The inner planets of our solar system are those between the Sun and the asteroid belt: Mercury, Venus, Earth, and Mars. Outer Planets Main article: Solar System/Outer Planets The inner planets of our solar system are those between the Sun and the asteroid belt Mercury, Venus, Earth, and Mars. Inner Planets Main article: Solar System/Terrestrial Bodies#Terrestrial Planets The heat is transferred by the process of convection, through the radiative and the convective zone, where it is radiated out through the photosphere and corona to the planets in the form of rays. It is 4.6 billion years old and is made up of layers, starting from the outside(with Temperatures), Corona(1,000,000 C), Transitive Region, Chromosphere, Photosphere(6,000 C), Convection Zone(1,000,000 C), Radiative Zone(2,000,000 C),and the Core(15,000,000 C).It produces heat from the fusion of hydrogen atoms. The equator takes around 25 days, whereas the polar regions take around 35 days (Earth days). (Most of the remaining mass is held by Jupiter) Because it is a globe of gases, it rotates differently depending on the area. The Sun is the largest body in our solar system, and contains 99.8% of the mass.

The Sun Main article: Solar System/Sun DiameterД§4% Hydrogen 25% Helium (Trace amounts of other elements) (Please note that all of the largest/smallest classifications of the planets do NOT include Pluto!) Use this chart to quickly compare some basic info for all the planets. Quick Guide to the Solar System Planets and Basic Info These two bodies are the source of many comets, the dwarf planets Pluto, Ceres, Eris, Haumea, and Makemake, and the questionable planet or dwarf planet Sedna. The leftover materials on the far edges of the solar system that did not form planets formed the Oort Cloud and Kuiper (kai-per) belt. One group of planetesimals that never formed a planet was between Mars and Jupiter.

In the outer solar system the rocky materials gathered to form planets, but the lighter gas materials were attracted by the gravity of the cores to form the Jovian (gaseous) planets(Jupiter, Saturn, Uranus, and Neptune). In the inner solar system, the small planetesimals continued to gather more material becoming the 4 rocky terrestrial planets (Mercury, Venus, Earth, and Mars).

When the nebula was sent into a spinning motion (possibly by a large star), the heavier, rocky materials gravitated to the center, and the lighter gaseous materials fell to the outer solar system. Surrounding it were the materials that would be the planets, planetesimals. Our solar system was formed about 4.57 billion years ago in a nebula, the center of which was the protosun. These topics are presented in the table below. However, the event sometimes involves a specific topic. This page focuses on the general competition of Solar System. 6.1 Newton's Laws of Motion and Gravitational Attraction.

Heavenly bodies solar system wikipedia