The planet that was discovered in 1930 is Pluto.

In the early 20th century, astronomers were on a quest to search for a hypothetical ninth planet beyond Neptune. Clyde Tombaugh, an American astronomer, was assigned the task of examining photographic plates in order to identify any moving objects that could potentially be the elusive planet. After months of meticulous analysis, Tombaugh identified a faint object that seemed to be shifting its position against the background stars. This discovery led to the identification of Pluto as the ninth planet in our solar system.

Pluto was named after the Roman god of the underworld, as suggested by Venetia Burney, an 11-year-old schoolgirl from England. Its discovery generated great excitement among scientists and the public, as it expanded our understanding of the solar system. However, over the years, further research and advancements in technology revealed more about Pluto, leading to its reclassification.

In 2006, the International Astronomical Union (IAU) redefined the definition of a planet, and Pluto no longer met the criteria. It was reclassified as a "dwarf planet" due to its size and its orbit that crosses Neptune's path. This decision sparked debates and discussions among astronomers and the general public, as many people had grown up learning about Pluto as the ninth planet.

Pluto is now recognized as the largest and second-most massive dwarf planet in the Kuiper Belt, a region of the solar system beyond Neptune. It has a unique orbit and composition compared to the eight classical planets. Although it is no longer considered a planet in the traditional sense, Pluto continues to fascinate scientists and astronomers, who are constantly studying it to uncover more about its characteristics and the mysteries of the outer solar system.

Despite its controversial status, the discovery of Pluto in 1930 remains a significant milestone in our understanding of the solar system. It serves as a reminder of how scientific knowledge evolves over time and how our perception of the universe can change with new discoveries and advancements in technology.

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