To be classified as a planet, an object must:


In 2006, Pluto didn’t move, shrink, or stop orbiting the Sun—only its scientific classification changed.  The International Astronomical Union (IAU) redefined what qualifies as a planet, and Pluto no longer met all of the new criteria.

 To be classified as a planet, an object must:
 • Orbit the Sun.
 • Have enough gravity to become nearly spherical.
 • Clear the neighborhood around its orbit by becoming gravitationally dominant.

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 Pluto was reclassified as a dwarf planet because it shares its orbital region with many other icy bodies in the Kuiper Belt, despite meeting the first two requirements. Despite its new label, Pluto remains a fascinating world.  It has a diameter of 1,477 miles (2,377 km), five known moons—including Charon, which is so large that the pair is often described as a binary system—and towering water-ice mountains, vast nitrogen-ice plains, and a thin atmosphere that expands and contracts as Pluto travels around the Sun. 


Writer: Binod Kumar Simkhada 
binodkumarsimkhada315@gmail.com

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