Earth
Our own planet, Terra, needs no introduction.  So much of its surface is covered by water that a better name would be Ocean. . . But there is more variety in the landscapes of Earth than any other planet, from snowfields to jungle to desert, it also experiences great extremes of temperature and climate, and is the only world on which we know there's life (not necessarily intelligent).

Text & images copyright © 2015 AstroArt by David A. Hardy. All Rights Reserved.

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