In order that he may escort us through the depths of immeasurable space, show us what astronomy really knows of conditions there and upon the other planets, Verne asks us to accept a situation frankly impossible.

The earth and a comet are brought twice into collision without mankind in general, or even our astronomers, becoming conscious of the fact.

Moreover several people from widely scattered places are carried off by the comet and returned uninjured.

Yet further, the comet snatches for the convenience of its travelers, both air and water.

Little, useful tracts of earth are picked up and, as it were, turned over and clapped down right side up again upon the comet's surface.