Pluto was reclassified from a planet to a "dwarf planet" in 2006 by the International Astronomical Union (IAU). This decision was based on a new definition of what constitutes a planet. According to the IAU, a celestial body must meet three criteria to be considered a planet: 1. It must orbit the Sun. 2. It must be spherical in shape, due to its own gravity. 3. It must have "cleared the neighborhood" around its orbit, meaning it is gravitationally dominant and has removed most other objects in i

Why Pluto was reclassified as a dwarf planet? #space #facts #NASA #science #universe #pluto | Interstellar Traveller

NASA just made an incredible discovery underneath Pluto's iconic heart. It could suggest the (faint) possibility of life in the far solar system. | Quartz

The Discovery Of Pluto. | Cosmoknowledge