“We live on a hunk of rock and metal that circles a humdrum star”
Carl Sagan declared in 1996, in one of the astronomer’s last interviews.
Earth is composed of four main layers, starting with an inner core at the planet’s center, enveloped by the outer core, mantle and crust.
The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius. There the temperature is as high as 9,800 degrees Fahrenheit (5,400 degrees Celsius). Surrounding the inner core is the outer core. This layer is about 1,400 miles (2,300 kilometers) thick, made of iron and nickel fluids.
In between the outer core and crust is the mantle, the thickest layer. This hot, viscous mixture of molten rock is about 1,800 miles (2,900 kilometers) thick and has the consistency of caramel. The outermost layer, Earth’s crust, goes about 19 miles (30 kilometers) deep on average on land. At the bottom of the ocean, the crust is thinner and extends about 3 miles (5 kilometers) from the sea floor to the top of the mantle.
Shota Maehara is a digital artist based in Nagoya, Japan. He creates realistic computer graphics and pursues simple artworks which have strong messages. Human mind, Nature, Universe, Science-his expression always has fundamental theme and shows it from a unique aspect. Almost all art works have its title which gives a new point of view to it.
Info source: NASA & Shota Maehara
