Why Is Pluto Not A Planet?

The video discusses Pluto's reclassification from a planet to a dwarf planet by the International Astronomical Union in 2006. It explains the criteria for planethood, which Pluto does not meet, and introduces the concept of dwarf planets and plutoids. The video also covers the Kuiper Belt, where Pluto resides, and mentions other celestial bodies like Eris, Haumea, and Makemake. It highlights the New Horizons mission launched by NASA to study Pluto and its moons, set for a flyby in July 2015. The episode concludes with a call to action for viewer engagement and support.

What year was Pluto reclassified from a planet to a dwarf planet?

• 2000

• 2006

• 2010

• 2015

Which celestial body is larger than Pluto in the Kuiper Belt?

• Eris

• Haumea

• Ceres

• Makemake

What is the main reason Pluto was not classified as a planet?

• It is not spherical

• It is too small

• It has not cleared its orbital path

• It is too far from the Sun

What new category was created for celestial objects like Pluto?

• Comets

• Asteroids

• Dwarf planets

• Minor planets

What mission was launched to study Pluto after its reclassification?

• Voyager

• New Horizons

• Galileo

• Cassini