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.Know More
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
The term "solar system" refers to the sun and all the bodies that are caught in its gravitational field. This includes the eight planets, several dwarf planets, the moons and a variety of asteroids and comets.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 >
The solar system is made up of the sun and all the planets, dwarf planets, moons, asteroids, meteoroids, comets, ice, rocks, artificial satellites and space-faring vessels. Living beings are also in the solar system, although they are only known to exist on Earth.Full Answer >
Seventeenth-century astronomer Galileo Galilei is widely credited with convincing major church leaders and prominent scientists that the sun, not the Earth, was the center of the solar system. Galileo was the first astronomer to study astronomy with a telescope, which helped him validate Nicolaus Copernicus' early 16th-century heliocentric theories.Full Answer >