Planet Earth

There is More Water in the Earth’s Mantle Than on the Surface

parts-of-the-earth-diagramThe planet Earth is huge. It is so large that we could not even fathom it’s size, the Earth has been estimated to weigh around 6 million, billion, billion kg (that’s 24 noughts!), we consider our planet to be the “blue planet” due to the amount of water but in reality water makes up less than  0.1 % of the entire planet’s mass.

The Earth’s surface contains 70% water, the vast oceans of Earth span for tens of thousands of kilometres, however in comparison to the size of the planet, the Earth’s surface is a tiny portion of the world. For example, in the Earth’s crust, the first layer of the Earth, which is around 35km below earth (which is around the length of the city of London) the mass of the land is 40 times greater than that of the oceans due to the sheer size of the bedrock.

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Planet Earth

The Longest Canyon in the World was Only Discovered Last Year

canyon_1567918aThe grandest canyon in the world may not be the one you may have heard of. In 2013 researchers discovered a canyon in the world that was, in fact, over 50% longer than the Grand Canyon in Arizona, USA. How did we not discover such a massive canyon until very recently? Simple. It was buried under a 2 km deep ice sheet in Greenland.

Tentatively named the “Grand Canyon of Greenland”, scientists from the university of Bristol have described the discovery as a mega-canyon. The canyon is more than 750  kilometers (466 miles) long, comparatively the Grand Canyon in Arizona is 446 kilometres (277 miles) long and no other canyon on earth comes close to its length.

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