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The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.36 million asteroids, and about 4,500 comets. It is located in an outer spiral arm of the Milky Way galaxy called the Orion Arm, or Orion Spur.
NASA’s Solar System Interactive (also known as the Orrery) is a live look at the solar system, its planets, moons, comets, and asteroids, as well as the real-time locations of dozens of NASA missions.
Explore the 3D world of the Solar System. Learn about past and future missions.
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.
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.
Eyes on the Solar System. This simulated view of the solar system allows you to explore the planets, their moons, asteroids, comets and the spacecraft exploring them. You can also fast-forward or rewind time, and explore the solar system as it looked from 1950 to 2050.
Humans have studied our solar system for thousands of years, but it was only in the last few centuries that scientists started to really figure out how things work. The era of robotic exploration—sending uncrewed spacecraft beyond Earth as our eyes and ears and senses—only started in the 1950s.
