Pluto

Pluto was discovered on February 18, 1930, by astronomer Clyde Tombaugh at the Lowell Observatory in Arizona. It was officially classified as the ninth planet in our solar system and held that status for 76 years. However, in 2006, the International Astronomical Union (IAU) redefined the criteria for what constitutes a planet, leading to Pluto's reclassification as a dwarf planet. Despite this change, Pluto remains a beloved celestial body, capturing the imagination of space enthusiasts worldwide. The heart-shaped region on Pluto is called Tombaugh Regio, named after Clyde Tombaugh, the astronomer who discovered Pluto in 1930.