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2. A Universe

With his trademark wit, Richard Hammond takes on the ultimate engineering project. How on earth do you make a planet, or a solar system, a galaxy or even a universe? To find out, he opens up his cosmic toolbox and builds each one piece by piece, from the top of an impossibly high tower. \n\nWhat does he need to construct the cosmos, and what happens if he gets it wrong? With eye-popping computer graphics, Richard discovers that it takes an entire universe to make our planet just right for us.

Source: BBC 2