Pluto

Pluto is a dwarf planet located in the Kuiper Belt, a region of the Solar System beyond the orbit of Neptune. It was discovered in 1930 by Clyde Tombaugh and was initially classified as the ninth planet in our solar system. However, in 2006, the International Astronomical Union redefined the criteria for planet classification, resulting in Pluto being reclassified as a "dwarf planet."Pluto has a highly elliptical orbit that takes about 248 years to complete one full revolution around the Sun. It is relatively small, with a diameter of approximately 2,377 kilometers (1,477 miles), making it smaller than Earth’s moon. Pluto has five known moons, the largest of which is Charon, which is so large relative to Pluto that they are sometimes considered a double system.The surface of Pluto is composed of ice and rock and features mountains, valleys, and possibly potential subsurface oceans. Its atmosphere, although thin, is primarily made up of nitrogen, with traces of methane and carbon monoxide. Pluto remains a subject of interest in planetary science and astronomy, especially following NASA's New Horizons mission, which provided valuable data about it in 2015.