This Friday sees the release of Journey to the Center of the Earth, the second major film adaptation of Jules Verne's groundbreaking 1864 novel. While director Eric Brevig's sweet 3D imagery depicts the Earth's core as a biosphere in a bubble of lava, the real center of the Earth might be even more fascinating. We've hit the geophysics books and brought back for you . . . a realistic journey to the center of the Earth, and the burning gravitational well you'd really find there.
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