Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune.It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun.It is the largest known trans-Neptunian object by volume, by a small margin, but is less massive than Eris.Like other Kuiper belt objects, Pluto is made primarily of ice and rock ...

2025年1月22日 · Pluto is a dwarf planet located in a distant region of our solar system beyond Neptune known as the Kuiper Belt. Pluto was long considered our ninth planet, but the International Astronomical Union reclassified Pluto as a dwarf planet in 2006. NASA’s New Horizons was the first spacecraft to explore Pluto up close, flying by in 2015.

2024年11月5日 · Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and glaciers. It is located in the distant Kuiper Belt. Discovered in 1930, Pluto was long considered our solar system’s ninth planet.

2025年1月14日 · Pluto is a dwarf planet that lies in the Kuiper [KI-per] Belt. It's an area full of icy bodies and other dwarf planets at the edge of our solar system. Pluto is known as the "King of the Kuiper Belt" – and it's the largest object in the region, even though another object similar in size, called Eris, has a slightly higher mass. One thing is ...

2015年7月13日 · Nasa's New Horizons mission made a close pass of Pluto this week. For more than 70 years, Pluto was one of nine planets recognised in our Solar System. But in 2006, it was relegated to the...

Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and maybe glaciers. Discovered in 1930, Pluto was long considered our solar system's ninth planet. But after the discovery of similar intriguing worlds deeper in the distant Kuiper Belt, icy Pluto was reclassified as a dwarf planet.

2024年11月5日 · Learn more about Pluto and other dwarf planets, which are defined as objects that orbit the Sun and are nearly round, but that have not been able to clear their orbit of debris. The International Astronomical Union (IAU) has recognized five dwarf planets: Pluto, Ceres, Haumea, Makemake, and Eris.

2025年1月19日 · Pluto, large, distant member of the solar system that formerly was regarded as the outermost and smallest planet. In 2006 a group of experts in the scientific community voted to give Pluto the new classification of dwarf planet.

This page shows Pluto location and other relevant astronomical data in real time. The celestial coordinates, magnitude, distances and speed are updated in real time and are computed using high quality data sets provided by the JPL Horizons …

2015年8月4日 · Pluto is a dwarf planet, a Kuiper Belt object and a trans-Neptunian object. Clyde Tombaugh, a U.S. astronomer, discovered Pluto in 1930.