A pictorial history of Earth from space

Over the past 70 years there has been a stunning assortment of images of our home planet taken from space. Take a trip through the history of Earth photography in our gallery, from the first "Earthrise" images, to a look at our precious planet from the outermost reaches of our solar system.

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Earth may have had muddy origins

The most commonly accepted theory for the creation of the Earth is that it was formed from an aggregate of rocky meteors and asteroids that built up over time. But new research indicates that far from being a stony conglomerate, the proto-Earth may have been a huge ball of churning, warm, wet mud.

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