Sol
The primary planetary system of the G-type main-sequence star Sol.
The Sol System consists of one star, eight primary planets, five recognized dwarf planets, and hundreds of natural satellites, along with millions of asteroids, comets, and other minor bodies. It spans a heliocentric region of influence extending beyond 100 astronomical units (AU), bounded by the heliopause and transitioning into interstellar space.
The system is divided into the inner rocky planets (Mercury, Venus, Earth, Mars), the asteroid belt, the outer gas and ice giants (Jupiter, Saturn, Uranus, Neptune), and the trans-Neptunian region, including the Kuiper Belt and scattered disc. Gravitationally stable Lagrange points, orbital resonances, and heliocentric resource zones make the system rich in both scientific and logistical interest.
The presence of liquid water, a magnetic field, and a stable climate make Earth unique within the system, though multiple moons and planetary bodies exhibit features of significant astrobiological and geophysical interest. The Sol System remains one of the most well-studied stellar systems known to humanity.
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