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What is a Planet? Mars, Pluto, and Exoplanets at Potomac Library
March 11, 2019 @ 7:00 pm – 8:00 pm
Dr. Harold Geller, from George Mason University, will be here to discuss definition of a planet. In 2006, the International Astronomical Union (IAU) officially changed the definition of a planet. No longer was Pluto to be a called a planet, but a dwarf planet. We will examine examples of objects inside and outside our solar system; addressing the issues as to whether or not they should be considered an example of a planet.