Astronomy Tonight for - 06-09-2025 Podcast Por arte de portada

Astronomy Tonight for - 06-09-2025

Astronomy Tonight for - 06-09-2025

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 On June 9th, 1930, a significant event in astronomy occurred that would forever change our understanding of the solar system. On this day, Clyde Tombaugh, a young astronomer at the Lowell Observatory in Flagstaff, Arizona, officially announced the discovery of Pluto to the world.

Tombaugh had actually first spotted Pluto on February 18th, 1930, but it took several months of careful observation and verification before the discovery was made public. The announcement was timed to coincide with the 149th anniversary of Galileo's death, as a tribute to the pioneering astronomer.

The discovery of Pluto was the culmination of a long search for the theoretical "Planet X," which was believed to exist beyond Neptune due to perceived perturbations in the orbits of Uranus and Neptune. Percival Lowell had initiated this search years earlier, and Tombaugh was continuing his work.

Interestingly, Pluto's discovery was somewhat serendipitous. It turned out that the calculations suggesting the existence of Planet X were flawed, and Pluto was much too small to have caused the supposed perturbations. Nevertheless, the discovery expanded our solar system and sparked decades of fascination with this distant, icy world.

In a fun twist of astronomical fate, Pluto's status as a planet would later be challenged. In 2006, the International Astronomical Union (IAU) controversially reclassified Pluto as a "dwarf planet," leading to heated debates in the scientific community and public outcry from Pluto enthusiasts.

So, on this day in 1930, our solar system grew a little bigger, and a small, icy world captured the imagination of astronomers and the public alike. Little did Clyde Tombaugh know that his discovery would lead to planetary drama nearly a century later! One can only imagine what Pluto thinks about all this fuss – perhaps it's content being the king of the Kuiper Belt, regardless of what we Earthlings choose to call it.
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