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 ...

Together, these layers protect us from the sun’s harmful radiation and keep temperatures on Earth habitable for all ... pleased to partner with Hong Kong Science Museum and Hong Kong Space ...

Sporadic E layers lit up during a solar storm, moving from poles to equator—surprising researchers and revealing potential ...

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically ... there are many horizontal layers, which are called strata. The study of strata is called ...