Click the link below the picture
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It’s a long way from planet Earth to the Universe’s edge. Our tiny home world, seemingly massive, is merely 12,742 km (7,917 miles) across. We typically think linearly: where the Sun is ~10,000 times farther away than Earth’s diameter. But cosmically, logarithmic scales — where each multiplicative factor of “10” defines another mark on our cosmic ruler — serve us far better. On a logarithmic scale, the Sun, Mercury, and Mars are practically equidistant. Another factor of ~10,000 in distance takes us to the Oort cloud. (see article for clarification)
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This horizontally-oriented logarithmic map of the Universe shows how, from left to right, we go from Earth-sized scales to the largest cosmic distances of all. As spectacular as this logarithmic view is, it “only” spans about 20 orders of magnitude: from the size of the Earth to the size of the present-day cosmic horizon. Credit: Pablo Carlos Budassi)
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Click the link below for the article:
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James' World 2 
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