The four smaller inner planets, Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of rock and metal. The two largest, Jupiter and Saturn, are composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are composed largely of substances with relatively high melting points, called ices, such as water, ammonia and methane, and are often referred to separately as "ice giants". Beyond the orbit of Neptune lies the area of the "trans-Neptunian region", with the doughnut-shaped Kuiper belt, home of Pluto and several other dwarf planets, and an overlapping disc of scattered objects, which is tilted toward the plane of the Solar System and reaches much further out than the Kuiper belt. Six of the planets, at least three of the dwarf planets, and many of the smaller bodies are orbited by natural satellites, usually termed "moons" after Earth's Moon.
Solar system definition is - the sun together with the group of celestial bodies that are held by its attraction and revolve around it; also : a similar system centered on another star. Within these populations are several dozen to more than ten thousand objects that may be large enough to have been rounded by their own gravity. The entire region is still largely unexplored. Meaning of solar system. The four outer planets, called the gas giants, are substantially more massive than the terrestrials. Learn more. How Many Words Are There In The English Language?Absentee Ballot vs. Mail-In Ballot: Is There A Difference?Bors swung the Isis and drove on solar-system drive to get well away from Garen.They'd originally been guard-boats, intended for solar-system duty only and quite incapable of overdrive.What Do “a.m.” And “p.m.” Stand For?What Is The Difference Between “Furlough” vs. “Layoff”?“Epidemic” vs. “Pandemic” vs. “Endemic”: What Do These Terms Mean?What’s The Difference Between “i.e.” vs. “e.g.”?He was within half an hour's solar-system drive of the grain-fleet.He waited while the solar-system drive pushed the Med Ship a quarter of the way around the bright planet below.He set the Isis's solar-system drive to that exact quantity.All Of These Words Are Offensive (But Only Sometimes)Other solar-system exploration programs, such as the next mission to the outer planets, are being slashed to pay for MSL.“Affect” vs. “Effect”: Use The Correct Word Every TimeWhat Is The Difference Between “It’s” And “Its”? (From Academic American Encyclopedia, 1983)The Solar System consists of the Sun and its planetary system of eight planets, their moons, and other non-stellar objects. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter.
Encyclopædia Britannica, Inc. In addition to these two regions, various other small-body populations including comets, centaurs and interplanetary dust freely travel between regions. The collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. The eight planets of the solar system and Pluto, in a montage of images scaled to show the approximate sizes of the bodies relative to one another.
It appears to consist overwhelmingly of many thousands of small worlds—the largest having a diameter only a fifth that of Earth and a mass far smaller than that of the M… the solar system definition: 1. the sun and the group of planets that move around it 2. the sun and the group of planets that….
It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud.
Identified dwarf planets include the asteroid Ceres and the trans-Neptunian objects Pluto, Eris, Haumea, and Makemake. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, linked populations of trans-Neptunian objects composed mostly of ices. solar system The planets (in comparative size) in order of distance from the Sun. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic plane.The Solar System also contains a number of regions populated by smaller objects. Definition of solar system in the Definitions.net dictionary. solar system - the sun with the celestial bodies that revolve around it in its gravitational field We truly appreciate your support.The Sun and all the heavenly bodies that orbit around it, including the eight planets, their moons, the asteroids and comets.The Solar System; the Sun and all the objects in orbit around it. The asteroid belt, which lies between Mars and Jupiter, is similar to the terrestrial planets as it mostly contains objects composed of rock and metal. Information and translations of solar system in the most comprehensive dictionary definitions resource on the web. The planets of the solar system are (in order of distance from the sun) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. What does solar system mean? Such objects are referred to as dwarf planets. It includes eight planets, one minor planet, and 34 natural satellites, more than 1,000 observed comets, and thousands of lesser bodies known as MINOR PLANETS (asteroids) and METEOROIDS. See more. Each of the outer planets is encircled by planetary rings of dust and other small objects.Please enter your email address:The sun, planets, and comets, which are assumed to form asystem, independent of the surrounding fixed stars.Thanks for your vote! Solar system definition, the sun together with all the planets and other bodies that revolve around it.