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- 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 | Proteus – NASA Solar System Exploration
Proteus orbits Neptune about every 27 hours Proteus is irregularly shaped and heavily cratered, but it shows no sign of geological modification Circling the planet in the same direction as Neptune rotates, Proteus remains close to Neptune's equatorial plane Proteus is one of the darkest objects in our solar system
- Neptune 3D Model – NASA Solar System Exploration
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- In Depth | Kuiper Belt – NASA Solar System Exploration
In fact, even though its orbit crosses Neptune's orbit, Pluto gets physically closer to Uranus than it ever does to Neptune Kuiper Belt Moons and Binaries A fairly large number of KBOs either have moons – that is, significantly smaller bodies that orbit them – or are binary objects
- 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
- In Depth | Triton – NASA Solar System Exploration
Triton is the largest of Neptune's 13 moons It is unusual because it is the only large moon in our solar system that orbits in the opposite direction of its planet's rotation―a retrograde orbit
- In Depth | Neptune Moons – NASA Solar System Exploration
How Neptune's Moons Got Their Names Since Neptune was named for the Roman god of the sea, its moons were named for various lesser sea gods and nymphs in Greek mythology
- 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, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids Beyond our own solar system, there
- In Depth | Moons – NASA Solar System Exploration
In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons As these planets grew in the early solar system, they were able to capture smaller objects with their large gravitational fields How Moons Get Their Names Every moon discovered in the modern era gets a number first
- Kuiper Belt and Oort Cloud - NASA Solar System Exploration
They are thought to come from the Kuiper Belt or from the so-called scattered disc, a dynamic zone created by the outward motion of Neptune that contains many icy objects with eccentric orbits The objects in the Oort Cloud and in the Kuiper Belt are presumed to be remnants from the formation of the solar system about 4 6 billion years ago
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