The solar system is a system in the universe that is comprised of the Sun, eight official planets, three dwarf planets and approximately 130 satellites of the planets, according to Nine Planets. Besides these bodies, the solar system also has numerous comets and asteroids, which are smaller. On the other hand, the Milky Way is the galaxy within which the solar system falls.
The inner section of the solar system is made up of the Sun, Mercury, Venus, Earth and Mars, while the outer solar system planets are Jupiter, Saturn, Uranus and Neptune. Current classification places Pluto under the dwarf planets. The planets are relatively small in relation to the space covered by the entire solar system. Hence, the larger portion of the solar system is space. The planets are in constant motion in their paths, which are called orbits. The Sun falls at the center of the solar system, with the orbits of the planets circling it.
The Milky Way, the collection of the stars or heavenly bodies of the solar system, is named due to its dimly glowing band appearance. The Milky Way is believed to have between 100 billion and 400 billion stars. The uncertainty of the number of stars is attributed to the billions of dwarf stars, which are not easily detectable.