Our Solar System

The Solar System is our local region of space comprising the Sun and the objects that orbit around it. This includes the eight major planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune) and their moons, the asteroid belt, the Kuiper belt and other orbiting objects such as dwarf planetscomets and planetesimals.

The Oort cloud – a spherical cloud of planetesimals – is believed to extend out to a distance of between 50,000 to 200,000 AU, the outer limit of which defines the edge of the solar system.

(N.B. until 2006, Pluto was considered to be a planet. However, it has now been reclassified as a dwarf planet.)

The Solar System to scale
The Solar System to scale – 1 pixel = 0.02 AU

Leave a Reply

Astronomy, Cosmology, Space and Astrophysics