Pluto - Wikipedia
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 …
Why is Pluto no longer a planet? - BBC News
2015年7月13日 · For more than 70 years, Pluto was one of nine planets recognised in our Solar System. But in 2006, it was relegated to the status of dwarf planet by the International …
All About Pluto | NASA Space Place – NASA Science for Kids
2025年1月2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 …
Why Is Pluto No Longer a Planet? | Britannica - Encyclopedia Britannica
Pluto is now classified as a dwarf planet because, while it is large enough to have become spherical, it is not big enough to exert its orbital dominance and clear the neighborhood …
What Is Pluto? (Grades 5-8) - NASA
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.
In Depth | Pluto – NASA Solar System Exploration
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 …
Pluto | Size, Moons, Temperature, & Facts | Britannica
5 天之前 · Pluto, large, distant member of the solar system that formerly was regarded as the outermost and smallest planet. It also was considered the most recently discovered planet, …
Pluto: Everything you need to know about the dwarf planet - Space.com
2022年7月28日 · Pluto is the largest known dwarf planet in the solar system and used to be considered the ninth and most distant planet from the sun.
Solar System Exploration: Pluto - NASA
2023年4月18日 · This site has facts, figures, images and links about dwarf planet Pluto.
Pluto By the Numbers – NASA Solar System Exploration
2025年1月9日 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.
- 某些结果已被删除