Eris

Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Scattered Disc / Eris
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Introduction1

Beyond Pluto (V101 Science, YouTube Playlist)
V101 Science (Facebook)

Encyclopedia

Eris (minor-planet designation 136199 Eris) is the most massive and second-largest known dwarf planet in the Solar System. It is a Trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory-based team led by Mike Brown and verified later that year. In September 2006, it was named after the Greco–Roman goddess of strife and discord. 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 object that has not been visited by a spacecraft. Eris has been measured at 2,326 ± 12 kilometers (1,445 ± 7 mi) in diameter; its mass is 0.28% that of the Earth and 27% greater than that of Pluto, although Pluto is slightly larger by volume. Eris has one known moon, Dysnomia. — Wikipedia

Eris (Encyclopædia Britannica)

Eris (Wolfram Alpha)

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Innovation

Science

Solar System Exploration: Eris (NASA Science)

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Preservation

History

Eris: The First Dwarf Planet (Nola Taylor Tillman, Space.com)

Library

Subject: Eris (Library Thing)

Subject: Eris (WorldCat)

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Participation

Education

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Organization

Eris (Minor Planet Center, International Astronomical Union)
Asteroids & Remote Planets Section (British Astronomical Association)

News

Eris (JSTOR)
Eris (Astronomy Magazine)

Government

Document

Eris (USA.gov)

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Physical

“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.