Solar System - Wikipedia
The Solar System [d] is the gravitationally bound system of the Sun and the objects that orbit it. [11] It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
Solar System Exploration - NASA Science
The solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea, Makemake, and Eris.
Solar system | Definition, Planets, Diagram, Videos, & Facts
2025年1月17日 · Solar system, assemblage consisting of the Sun and those bodies orbiting it: 8 planets with about 210 known planetary satellites; many asteroids, some with their own satellites; comets and other icy bodies; and vast reaches of highly tenuous gas and dust known as the interplanetary medium.
The solar system—facts and information - National Geographic
2019年3月27日 · Our solar system is made up of the sun and all the amazing objects that travel around it. Learn more about the planets, asteroids, and comets in our solar system. Skip to content
Solar System - Simple English Wikipedia, the free encyclopedia
The Solar System is the Sun and all the objects that travel around it. The Sun is orbited by planets, asteroids, comets and other things. Planets and dwarf planets of the Solar System. Compared with each other, the sizes are correct, but the distances are not. The Solar System is about 4.568 billion years old. [1]
The solar system: Facts about our cosmic neighborhood
2022年2月25日 · Here's a look at our solar system, from the scorching surface of Venus to the home of the largest volcano. When you purchase through links on our site, we may earn an affiliate commission....
In Depth | Our Solar System - NASA Solar System Exploration
Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
Solar System Facts | Information, Size, History and Definition
The solar system consists of the Sun; the eight official planets, at least three “dwarf planets”, more than 130 satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium.
Our Solar System - NASA Science
2016年3月15日 · Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Science 101: The Solar System - National Geographic Society
2024年12月3日 · How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system's genesis, plus its planets, moons, and asteroids.