The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Off on a Comet by Jules Verne: than granite, it could not be blasted by ordinary powder; dynamite alone
could suffice to rend it.
The disappointment was very great. Unless some means of protection
were speedily devised, death seemed to be staring them in the face.
Were the figures in the mysterious documents correct? If so, Gallia must
now be a hundred millions of leagues from the sun, nearly three times
the distance of the earth at the remotest section of her orbit.
The intensity of the solar light and heat, too, was very seriously
diminishing, although Gourbi Island (being on the equator of an orb
which had its axes always perpendicular to the plane in which it revolved)
enjoyed a position that gave it a permanent summer. But no advantage
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