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Structure of Milky Way.
I
A JOURNEY THROUGH SPACE.
We are accustomed to survey the universe from the stand point of our globe, and, consequently, as far as the mere evidence of sense is concerned, all else appears little compared to man's abode; and so great is the mastery of sense over reason, that, for ages, man resisted the conclusive force of the latter. It was an agreeable delusion, that the whole universe centred in man; and when Galileo was persecuted by papal
