"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

worlds in our solar system and beyond! Scientists now think the Earth’s story began around 4.6 billion years ago in a disk-shaped cloud of dust and gas rotating around the early sun, made up of ...

Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron ...

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

Plate tectonics is the theory that Earth's outer layer is made up of plates, which have moved ... areas between these new sub-continents. The land masses continued to move apart, riding on ...

Seafloor is made ... Earth cannot be studied by drilling holes to take samples. Instead, scientists map the interior by watching how seismic waves from earthquakes are bent, reflected, sped up ...