What is a Planet? | Planets – NASA Solar System Exploration
Everyone knows that Earth, Mars and Jupiter are planets. But both Pluto and Ceres were once considered planets until new discoveries triggered scientific debate about how to best describe …
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 …
Planet Compare - NASA Solar System Exploration
Jan 9, 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.
RPS 3D Viewer - NASA Solar System Exploration
Jan 9, 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.
Astronomers Solve Ancient Mystery of the Chinese Calendar
Jun 19, 1993 · Kevin Pang of JPL and John Bangert of the Naval Observatory said they have found a date in 1953 B.C. when the sun, moon and five planets all lined up in the sky at dawn - …
About Us - NASA Solar System Exploration
Jan 9, 2025 · We provide the public with reliable, accurate, up-to-date information about the planets, moons, asteroids, comets and everything else in our solar system. We also provide a …
The Solar System and Beyond is Awash in Water
Apr 6, 2015 · Astronomers see the signature of water in giant molecular clouds between the stars, in disks of material that represent newborn planetary systems, and in the atmospheres of giant …
Genesis Education: Cosmic Chemistry: Planetary Diversity
During the explorations of the Cosmic Chemistry: Planetary Diversity module, students will make decisions concerning possible patterns or groupings of the physical and chemical …
Bibliography - NASA Solar System Exploration
Apr 23, 2024 · Keplerian Elements for Approximate Positions of the Major Planets: http://ssd.jpl.nasa.gov/txt/p_elem_t1.txt; Planetary Satellite Discovery Circumstances: …
In Depth | Eris – NASA Solar System Exploration
Eris is one of the largest known dwarf planets in our solar system. It's about the same size as Pluto but is three times farther from the Sun. At first, Eris appeared to be larger than Pluto.