What lies at the heart of this discovery? And how does a slowing inner core impact the Earth as we know it?<\/p>\n\n\n\n Beneath our feet, at the heart of our planet, lies one of the greatest mysteries of Earth science\u2014the inner core. Discovered in 1936<\/a> by Danish seismologist Inge Lehmann, the inner core was revealed through her studies of seismic waves generated by earthquakes. These waves, she found, behaved in unexpected ways as they traveled through the Earth, suggesting the presence of a solid sphere nestled within the molten outer core. This discovery has since painted a picture of a planet far more dynamic and complex than previously imagined.<\/p>\n\n\n\n Composed primarily of iron and nickel, the inner core is a solid metallic ball with a radius of about 1,220 kilometers (about 760 miles). 70% as wide<\/a> as the Moon! Despite temperatures that rival the surface of the sun\u2014around 5,700 degrees Celsius (about 10,300 degrees Fahrenheit)\u2014this iron core remains solid due to the immense pressures that exceed 3 million times the atmospheric pressure at the Earth’s surface. This extreme environment makes the inner core one of the most fascinating yet inaccessible places in the solar system.<\/p>![\"\"](\"https:\/\/themindunleashed.com\/wp-content\/uploads\/2024\/12\/shutterstock_469697600.jpg\")
<\/figure>\n\n\n\nUnderstanding the Earth’s Inner Core<\/strong><\/h2>\n\n\n\n