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.
About the Planets - NASA Solar System Exploration
May 28, 2025 · Is There Another Planet in the Solar System? It's an intriguing idea that might explain some current mysteries, but direct evidence of another planet has yet to be found.
The discovery of Eris — orbiting the Sun and larger than Pluto (which was then designated the ninth planet) — forced astrono-mers to consider whether Eris should be classified as the tenth planet.
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.
In Depth | Kuiper Belt – NASA Solar System Exploration
Similar to the relationship between the main asteroid belt and Jupiter, it's a region of objects that might have come together to form a planet had Neptune not been there.
By the Numbers | Earth's Moon – NASA Solar System Exploration
The distance from the center of an object to its equator. The outer or uppermost part of a planet, moon, asteroid, comet or other body. The gravitational acceleration experienced at its surface at the …
In Depth | Saturn Moons – NASA Solar System Exploration
Four spacecraft have visited the Saturn system, but only Cassini actually orbited the ringed planet. Doing so bought Cassini time – more than a decade – to linger and watch Saturn’s exotic zoo of 80 …
Solar System Ambassadors - NASA Solar System Exploration
In this program, underprivileged eighth and ninth graders designed and developed science projects. For the future, She looks forward to continuing her contributions to the exploration of the solar system …
Mars 3D Model – NASA Solar System Exploration
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Solar System Exploration - NASA Science
Solar System Exploration - NASA Science