Could we ever journey to the centre of the Earth?

Here, scientists think the crystal in the core changes, perhaps due to a slightly different elemental mix, or because it has grown at a different angle, horizontally instead of vertically. That shift in crystallisation could speak to a past calamity. The Earth may have melted and remelted more than once in its early history as all these collisions were happening. And this is the oldest part of the inner core. It’s like a time capsule.