Is Pluto a Planet?Education
(IAU) in Prague, by a majority vote of only the 424 members present, the IAU (an organization of over 10,000 members) passed a resolution defining planet in such a way as to exclude Pluto and established a new class of objects in the solar system to be called 'dwarf planets', which...
(1) A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and © has cleared the neighbourhood around its orbit.* (2) A "dwarf...
the definition would be quite simple: “A planet is a sub-stellar mass body that has never undergone nuclear fusion and that has sufficient self-gravitation to assume a spheroidal shape adequately described by a triaxial ellipsoid regardless ...
Why can’t astronomers decide on whether or not Pluto is a planet? Everyday Einstein explains the controversy about our faraway neighbor
Is Pluto a Planet?Though small and very far from the Earth, we've always thought of Pluto(冥王星) as the ninth planet in our solar system; however, there has been debate among astronomers about Pluto's validity as a planet.Most people do in fact consider it a planet, thinking it bizar...
On August 24, 2006, at the 26th General Assembly of the International Astronomical Union (IAU) in Prague, by a majority vote of only the 424 members present, the IAU (an organization of over 10,000 members) passed a resolution defining planet in such a way as to exclude Pluto and ...
again been thrown into an age-old debate about what is and what is not a planet. One of many sizeable hunks of rock and ice in the Kuiper Belt, Eris has resisted easy classification and inspired much controversy over the definition of planethood. But, Pluto itself has been subject to ...
9 Reasons why Pluto is a Planet It seems IAU Secretary General Piero Benvenuti and the scientist who discovered a planet but wants people to believe he “killed” one—Mike Brown—are tired of the debate and just want it to go away—or so they say. ...
According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to the bottom of whether Pluto is a planet, I tracked down planetary scientist Dr. Will Grundy, and asked him: Is Pluto a planet or a