EARTH - How Planet Earth Got its Name

In the fifteenth century, as intellectuals began to reconsider our planet's shape and position in the Universe, the word 'Earth' first came to be used in reference to the planetary body we know it as today and the term considered comparable to Mars, Venus, Saturn, and the other spheres of space.
Photographic evidence of our round, blue planet Earth didn't appear until the 1950s.
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