¿Por qué PLUTÓN ya no es un planeta? | Con Star Tres

The video discusses the reclassification of Pluto from a planet to a dwarf planet, following the discovery of Eris and other celestial bodies. It explains the International Astronomical Union's 2006 definition of a planet, which requires a celestial body to orbit the sun, be spherical, and clear its orbit. Pluto fails the third criterion, leading to its reclassification. The video also covers the controversy surrounding this decision and new proposals for defining planets, emphasizing a geophysical approach that focuses on a body's shape and mass rather than its orbit.

How does Pluto's mass compare to that of Earth in terms of gravitational dominance?

What were the arguments presented by astronomers against the new definition of a planet?

What changes were proposed regarding the definition of a planet in the new proposal?