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20-years-ago-the-discovery-of-eris-changed-everything https://www.astronomy.com/tags/dwarf-planets/ Dwarf Planets | Astronomy.com https://www.astronomy.com/uploads/2025/01/Eris.jpg InStock USD 1.00 1.00 solar-system article ASY 2025-02-04 2025-01-31 158145
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Dwarf Planets

Artist's concept of Eris
Solar System

20 years ago, the discovery of Eris spelled doom for planet Pluto

Solar System

Ceres: An ocean world in the asteroid belt

Solar System

These dwarf planets are just as strange as Pluto

Solar System, The Moon

Our lopsided Moon was likely hit by a dwarf planet

Exoplanets, Planets, Solar System

Thin, insulating layer may prevent Pluto’s underground ocean from freezing

Exoplanets, Planets, Solar System

An organically grown planet definition

Solar System

Dawn maps Ceres craters where ice can accumulate

Exoplanets, Planets, Solar System

How can astronomers be sure that Pluto is larger than Eris? Could we get a different number for Eris’ size once it’s visited by a spacecraft?

Exoplanets, Planets, Robotic Spaceflight, Solar System

New Horizons collects first science on a Kuiper Belt object past Pluto

Solar System

Dwarf planet Haumea’s lunar system smaller than anticipated

Solar System

2007 OR10: Largest unnamed world in the solar system

Exoplanets, Planets, Robotic Spaceflight, Solar System

Pluto’s interaction with the solar wind is unique, study finds

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