Eris (dwarf planet) - Wikipedia
Eris is the ninth-most massive known object orbiting the Sun and the sixteenth-most massive overall in the Solar System (counting moons). It is also the largest known object in the solar system that has not been visited by a spacecraft.
Eris - NASA Science
2005年1月8日 · Dwarf planet Eris is a member of a group of objects that orbit in a disc-like zone beyond the orbit of Neptune called the Kuiper Belt. This distant realm is populated with thousands of miniature icy worlds, which formed early in the history of …
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.
Eris Facts | Temperature, Surface, Information, History & Definition
2019年10月8日 · Eris is the most distant dwarf planet, located beyond the orbit of Neptune. It was discovered in 2005 and was originally classified as a planet. It is the second-largest dwarf planet discovered and it led to both it and Pluto’s demotion from planets to dwarf planets.
Meet the Solar System's five official dwarf planets - The Planetary …
2023年4月19日 · The IAU currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Ceres lies in the main asteroid belt between Mars and Jupiter, while the rest are in the Kuiper Belt. There are almost certainly more dwarf planets. Unfortunately, most are very far away, and we can’t definitively prove that they are round.
Eris: The First Dwarf Planet | Space
2019年7月10日 · Eris was one of the first dwarf planets to be discovered in the solar system. It is almost the same size as Pluto, and its discovery directly led to the former ninth planet's demotion.
Eris | Dwarf Planet, Kuiper Belt, Plutoid | Britannica
2024年9月27日 · Eris, large, distant body of the solar system, revolving around the Sun well beyond the orbits of Neptune and Pluto in the Kuiper belt. It was discovered in 2005 in images taken two years earlier at Palomar Observatory in California, U.S.
Eris (Dwarf Planet) Facts
Eris is the most massive dwarf planet in the Solar System, exceeding Pluto’s mass by 28%. As such, it was a serious contender to be a tenth planet but failed to meet the criteria set out by the International Astronomical Union in 2006. Eris was named after the Greek goddess of discord.
StarChild: The Dwarf Planet Eris - NASA
Eris, the largest known dwarf planet, was first detected in data collected in October of 2003. It was not identified until January of 2005. Mike Brown and his team of astronomers discovered what was considered to be the 10th planet while doing observations at …
Scientists discern internal structure of mysterious dwarf planet Eris
2023年11月15日 · Eris, the researchers said on Wednesday, appears to have a rocky interior below a shell of ice. Pluto also has an icy exterior with rock below, but possesses a higher ice content and is...