The Earth's interior is composed of four layers ... The deepest layer is a solid iron ball, about 1,500 miles (2,400 kilometers) in diameter. Although this inner core is white hot, the pressure ...

A massive asteroid, nicknamed the "Christmas Eve asteroid," is set to skim past Earth on December 24 at an astonishing speed of 14,743 mph (23,700 km/h). The space rock, known as 2024 XN1, is about ...

which has a diameter of 329 miles/530 kilometers and is the brightest asteroid visible from Earth, according to NASA. Technically, you could use a large telescope to get a close-up of “Dizzy ...