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  • 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
  • RPS 3D Viewer - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Planet Compare - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • In Depth | Sun – NASA Solar System Exploration
    The Sun is the largest object in our solar system Its diameter is about 865,000 miles (1 4 million kilometers) Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it
  • In Depth | Asteroids - NASA Solar System Exploration
    Asteroids, sometimes called minor planets, are rocky remnants left over from the early formation of our solar system about 4 6 billion years ago The current known asteroid count is: Most of this ancient space rubble can be found orbiting our Sun between Mars and Jupiter within the main asteroid belt
  • Voyage: A Solar - NASA Solar System Exploration
    Voyage is a 1 to 10-billion scale model of the Solar System that was permanently installed in Washington, D C , in October 2001 The real Solar System is exactly 10 billion times larger than the Voyage model On this scale the Sun is about the size of a large grapefruit The Earth is 15 meters (50 feet) away and smaller than the head of a pin
  • In Depth | Uranus Moons – NASA Solar System Exploration
    While most satellites orbiting other planets take their names from ancient mythologies, Uranus' moons are unique in being named for Shakespearean characters, along with a couple of the moons being named for characters from the works of Alexander Pope
  • Solar System Exploration
    Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms
  • In Progress - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Bibliography - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system





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