Eris was the catalyst for Pluto’s demotion last summer, when the International Astronomical Union redefined the term “planet” and created the category of dwarf planet for objects such as Eris and Pluto.
Using the Keck Observatory and the Hubble Space Telescope, Michael E. Brown and Emily Schaller at the California Institute of Technology in Pasadena have now put the mass of Eris at a third more than Pluto’s.
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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