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Pluto is the ninth-largest and tenth-most-massive object to orbit the Sun, and the largest known trans-Neptunian object. It has five moons, including Charon, and was discovered in 1930 by Clyde W. Tombaugh.
- Pluto (Mythology)
1st century sculpture of Pluto in the Getty Villa. In...
- Moons of Pluto
The dwarf planet Pluto has five natural satellites. [1] In...
- Minor-Planet Designation
The major exception to the convention that the number tracks...
- Grand Tack Hypothesis
The "Mars problem" is a conflict between some simulations of...
- Scattered Disk
The scattered disc (or scattered disk) is a distant...
- Pluto (Disambiguation)
Pluto (), a character in Astro BoyPluto (Disney), a Disney...
- Dwarf Planet
A dwarf planet is a small planetary-mass object that is in...
- Talk
Pluto is a featured article; it (or a previous version of...
- Update
We would like to show you a description here but the site...
- Eris
Eris (minor-planet designation: 136199 Eris) is the most...
- Pluto (Mythology)
Learn about Pluto, the dwarf planet in the Kuiper Belt, and its moons Charon, Styx, Nix, Kerberos, and Hydra. See images and videos from NASA's New Horizons mission, the first to explore Pluto up close.
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- IAU Classification
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The discovery made headlines across the Earth. The Lowell Observatory had the right to name the new object. They received over 1000 suggestions from all over the world. Some proposed Atlas as the name. Others wanted to name it Zymal. Tombaugh urged Slipher to suggest a name for the new object quickly before someone else did. Constance Lowell propos...
After a debate, in August 2006 an IAU resolution created an official definition for the term "planet". According to this resolution, there are three conditions for an object in the Solar Systemto be considered a planet: 1. The object must be in orbit around the Sun. 2. The object must be massive enough to be rounded by its own gravity. More specifi...
Pluto and its largest moon, Charon, are sometimes called a "binary system". This is because the barycentre of their orbits does not lie within them. The IAU has yet to formalise a definition for binary dwarf planets, and until it passes such a ruling, they classify Charon as a moon of Pluto. Pluto has four known smaller moons, Nix and Hydra, discov...
Pluto is a dwarf planet in the Solar System, the ninth largest body that moves around the Sun. It was discovered in 1930 and was considered a planet until 2006, when it was reclassified as a dwarf planet along with Eris and Ceres.
Aug 31, 2024 · Pluto is a small, distant, and icy object that was reclassified as a dwarf planet in 2006. Learn about its orbit, moons, surface, history, and exploration by New Horizons spacecraft.
- In 2006 the International Astronomical Union (IAU) removed Pluto from the list of planets and classified it as a dwarf planet because of its small...
- Amateur American astronomer Clyde Tombaugh found Pluto in the constellation Gemini on February 18, 1930.
- Pluto’s mean distance from the Sun is about 5.9 billion km (3.7 billion miles or 39.5 astronomical units).
- Pluto's orbit is more elongated, or eccentric, than any of the planetary orbits and more inclined (at 17.1°) to the ecliptic. In traveling its ecce...
- Pluto possesses five known moons. Charon is by far the largest, being fully half the size of Pluto. Pluto’s other four moons—Hydra, Nix, Kerberos,...
Pluto has an equatorial diameter of about 1,477 miles (2,377 kilometers). Pluto is about 1/5th the width of Earth. From an average distance of about 3.7 billion miles (5.9 billion kilometers), Pluto is about 39 times farther away than the Earth is from the Sun.
Learn about the surface, crust, and interior of Pluto, a dwarf planet with remarkable geologic diversity and seasonal changes. See images and maps of Pluto's ices, mountains, craters, and features from New Horizons mission.
Learn about Pluto, the former ninth planet that was reclassified as a dwarf planet in 2006. Find out about its size, orbit, moons, surface, atmosphere, and more from NASA's website.
