Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

The Earth's structure. Planet Earth is not a solid ball of rock, it's made up of different layers. The crust of ... from solid iron and nickel. In this diagram, the red lines represent the edges ...

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 ...

A layer of charged particles, called the ionosphere, surrounds Earth, extending from about 50 to 400 miles above the surface of the planet. Disclaimer: AAAS and EurekAlert! are not responsible for ...

Scientists Baffled to Find Signs of Another Core Within Earth’s Inner Core, Say ‘We Have to Rewrite the Textbooks’ For ...

There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity.