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 ...

It seems as if Earth's atmosphere is incredibly thin, wrapped tightly around our planet. In fact, the atmosphere consists of multiple layers, with some scientists of the opinion that the atmosphere ...

Earth is made out of different layers, and those layers get hotter and more pressurized the deeper you go. The first layer is the crust, a thin outer shell that extends about 18 miles (30 km ...

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 ...

New research sheds light on the Earth's "innermost inner core," offering ... back and forth from one side of the globe to the other up to five times like a ricochet," Pham says.

The diatoms in diatomaceous earth are largely made up of a chemical compound called silica. Silica is found in nature as a component of everything from sand and rocks to plants and humans.

NASA astronauts are returning to Earth after nine months in space. Experts have said a prolonged period in space can come ...