Solar System
Our Solar System consists of 8 planets, several dwarf planets, dozens of moons, and millions of asteroids, comets, and meteoroids. They are all bound by gravity to the Sun, which is the
In Progress
NASA''s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Overview | Asteroids, Comets & Meteors
Our solar system''s small bodies – asteroids, comets, and meteors – pack big surprises. These chunks of rock, ice, and metal are leftovers from the formation of our solar system 4.6 billion years ago.
Overview
Overview The first U.S. mission to Venus in more than three decades, VERITAS will study Earth''s sister planet from crust to core. VERITAS is the next mission in NASA''s Discovery
Solar system | Definition, Planets, Diagram, Videos,
There are eight planets in the solar system. The four inner terrestrial planets are Mercury, Venus, Earth, and Mars, all of which consist mainly of rock.
9.2: Overview of Our Planetary System
Our solar system currently consists of the Sun, eight planets, five dwarf planets, nearly 200 known moons, and a host of smaller objects. The planets can be
In Depth | Sun – NASA Solar System Exploration
Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it. Even though the Sun is the center of our solar system and essential to
In Depth | Our Solar System – NASA Solar System Exploration
The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury,
Solar System
Learn about the solar system in astronomy. Get its definition, discover the planets in order, and get interesting facts.
Planet Compare
NASA''s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Solar System planets complete guide
Below we''ll reveal how the planets of the Solar System formed, the characteristics that define them as the worlds we know today, and also how to
Solar System Exploration
The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.
Solar System
OverviewGeneral characteristicsDefinitionFormation and evolutionSunInner Solar SystemOuter Solar SystemTrans-Neptunian region
Astronomers sometimes divide the Solar System structure into separate regions. The inner Solar System includes Mercury, Venus, Earth, Mars, and the bodies in the asteroid belt. The outer Solar System includes Jupiter, Saturn, Uranus, Neptune, and the bodies in the Kuiper belt. Since the discovery of the Kuiper belt, the outermost parts of the Solar System are considered a distinct region consisting of the objects beyond Neptune
ViewSpace
ViewSpace gives you the opportunity to explore our planet, solar system, galaxy, and universe. Provided free with the support of NASA, ViewSpace is developed
RPS 3D Viewer
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 | Enceladus – NASA Solar System Exploration
Also, like some other moons in the extensive systems of the giant planets, Enceladus is trapped in what''s called an orbital resonance, which is when two or more moons line up with their
Solar system guide
Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home.
Pluto By the Numbers
Pluto was once our solar system''s ninth planet, but has been reclassified as a dwarf planet. It''s located in the Kuiper Belt.
Our Solar System: A Tour of All the Planets
Our solar system is both our birthplace and our launchpad. And its planets, each unique and mysterious, continue to invite us on a journey of discovery that has only just begun.