Our solar system is referred to simply as the Solar System. That is its name because it is a heliocentric model in which all planets in the system revolve about the sun.Continue Reading
The sun is a G2 star that belongs to the Milky Way galaxy. It is only one of an estimated 100 billion stars in this galaxy. The sun's age is about 4.5 billion years.
Eight planets revolve around the sun. These are Earth, Mercury, Mars, Uranus, Venus, Neptune, Jupiter and Saturn. At one time, Pluto was the ninth planet, but as of August 2006, it is classified as a dwarf planet.Learn more about Astronomy
A solar system is defined as the collection of a star and all the objects that revolve around it. The solar system that Earth belongs to is composed of the sun, eight planets, dwarf planets, asteroids and comets.Full Answer >
The solar system includes the sun and anything that moves in an orbit around the sun, according to the National Aeronautics and Space Administration. This includes planets, moons, asteroids, meteoroids, comets and other objects with an orbit in space. The word solar refers to the sun, which is at the center of the solar system.Full Answer >
A working model of the solar system is called an orrery. This apparatus contains the sun, planets and often their satellites in their correct positions and phases. According to Reference.com, the first such model was made for Charles Boyle, the Earl of Orrery for whom it was named.Full Answer >
The geocentric, or Ptolemaic, model of the solar system is the astronomical model advanced by ancient people to describe the motions of the planets, Sun and moon. This model held that the Earth was the center of the solar system, and the other heavenly bodies orbited around it. Scientists now know that this model is incorrect and that the Sun is at the center of the solar system.Full Answer >