About Mickey Mellen Mickey has been using Google Earth since it was released in 2005, and has created a variety of geo-related sites including Google Earth Hacks. He runs a web design firm in ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball, about ...

Researchers on Tuesday said an intensive study of Earth’s deep interior confirmed the existence of a distinct structure inside our planet’s inner core.

Seismic waves generated by earthquakes travel through Earth's solid iron inner core faster in the direction of the rotation axis than along the equator. Scientists created a core growth model ...

Scientists have harnessed powerful waves from earthquakes to measure Earth's innermost layer and found that our planet's center is a 450-mile-wide (725 kilometers) ball of solid iron-nickel alloy.

A pair of seismologists documented new evidence of a fifth layer: a 400-mile-thick solid metallic ball at the center of Earth’s inner core — like the smallest figurine of a massive, planetary ...

This theory suggests that the characteristics of tne earth's interior can be described on the basis of variations in condition rather than composition.

A new study suggests that Earth's true core could be a ball of iron-nickel that scientists hadn't uncovered yet.