From Mount Olympus to Pluto's Demotion: a Timeline of Eris Shaking the Heavens
By Sophia Al-Mansoor
Q1: Why did Mike Brown choose the name Eris instead of an Olympian god?
A1: Brown specifically selected Eris because the discovery caused an unprecedented level of institutional friction, philosophical dispute, and academic argument among astronomers trying to define a planet. It was also a subtle nod to the chaos caused by the demotion of Pluto.
Q2: Is Eris larger than Pluto?
A2: Pluto has a slightly larger diameter (roughly 2,376 kilometers compared to Eris's 2,326 kilometers). However, Eris is roughly 27% more massive than Pluto because it contains significantly more rock beneath its frozen crust, making it far denser.
Q3: Could the IAU reverse its decision and reinstate Pluto and Eris as true planets?
A3: A formal reversal is extremely unlikely. While some planetary scientists favor a geophysical definition that classifies any round geological body as a planet, adopting that metric would immediately add the Moon, dozens of outer moons, and hundreds of Kuiper Belt bodies to the planetary roster, diluting the utility of the classification.
Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.
