NASA's Psyche Mission to a Metal Asteroid May Unlock the Mysteries of Earth's Core

French novelist Jules Verne delighted 19th-century readers with the tantalizing notion that a journey to the center of the Earth was actually plausible. Since then, scientists have long acknowledged that Verne's literary journey was only science fiction. The extreme temperatures of the Earth's interior--around 10,000 degrees Fahrenheit (5,537 Celsius) at the core--and the accompanying crushing […]