Pluto By the Numbers - NASA Solar System Exploration
Oct 21, 2025 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.
In Depth | Our Solar System – NASA Solar System Exploration
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; …
In Depth | Kuiper Belt – NASA Solar System Exploration
In 1930, Pluto became the first Kuiper Belt object to be discovered. It was found at a time before astronomers had reason to expect a large population of icy worlds beyond Neptune.
In July 2005, a team of scientists announced the discovery of a KBO that appeared to be slightly larger than Pluto. The object, temporarily designated 2003UB313 and later named Eris, orbits the Sun …
About the Planets - NASA Solar System Exploration
May 28, 2025 · In 2006, the International Astronomical Union (IAU) - a group of astronomers that names objects in our solar system - agreed on their own definition of the word "planet." This new definition …
Bibliography - NASA Solar System Exploration
Apr 23, 2024 · Information on this site is gathered either directly from scientists and engineers working on active missions or from Websites from global space agencies, including NASA and the European …
If you know how big you want the largest size (LS) in the model to be, then the scale is the ratio of the true largest size (TLS, e.g., the distance from the Sun to Pluto) to the size in the model (LS):
In Depth | Ganymede – NASA Solar System Exploration
Not only is it the largest moon in our solar system, bigger than the planet Mercury and the dwarf planet Pluto, but NASA’s Hubble Space Telescope has found the best evidence yet for an underground …
Pluto 3D Model – NASA Solar System Exploration
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Planet Compare - NASA Solar System Exploration
Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.