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The naked eye can only see a very
limited slice of the universe.
Staring wide-eyed at the distant
points of light dotting the night-time sky, we spot a shooting
star, but fail to witness the last breaths of a supernova.
Squinting in an up-close inspection of our hands, we may notice
a fleck of dirt, but certainly miss our skin's minute molecular
make-up. Thus, our imaginations struggle to fathom the
incredibly vast dimensions of the world in which we live.
Fortunately, imagination is not the
only way to visualize the invisible. |

A comet -
shortly before impact - races towards primordial Earth
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