system, scheme - a group of independent but interrelated elements comprising a unified whole; "a vast system of production and distribution and consumption keep the country going"

heliosphere - the region inside the heliopause containing the sun and solar system

asteroid, minor planet, planetoid - any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)

Earth, globe, world - the 3rd planet from the sun; the planet on which we live; "the Earth moves around the sun"; "he sailed around the world"

interplanetary medium - interplanetary space including forms of energy and gas and dust

Jupiter - the largest planet and the 5th from the sun; has many satellites

Mars, Red Planet - the 4th planet from the sun

Mercury - the smallest planet and the nearest to the sun

Neptune - a giant planet with a ring of ice particles; the 8th planet from the sun

planet - any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system

Pluto - the second smallest planet and the farthest known from the sun; has the most elliptical orbit of all the planets

Saturn - a giant planet which is surrounded by three planar concentric rings of ice particles; 6th planet from the sun

sun - a typical star that is the source of light and heat for the planets in the solar system; "the sun contains 99.85% of the mass in the solar system"

Uranus - a giant planet with a ring of ice particles; 7th from the sun

Venus - the second nearest planet to the sun; visible as an early `morning star' or an `evening star'; rotates slowly clockwise (in the opposite direction from the normal rotation of the planets); "before it was known that they were the same object the evening star was called Venus and the morning star was called Lucifer"