Microscopic and magnetic characterisation of a giant spearhead magnetofossil

Ancient ‘animal GPS’ identified in magnetic fossils

18 November 2025

The earliest evidence of an internal ‘GPS’ system in an animal has been identified by researchers, which could help explain how some modern birds and fish evolved the ability to use the Earth’s magnetic field to navigate long distances.

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The Esquel pallasite from the Natural History Museum collections, consists of gem-quality crystals of the silicate mineral olivine embedded in a matrix of iron-nickel alloy.

Death of a dynamo – a hard drive from space

21 January 2015

Hidden magnetic messages contained within ancient meteorites are providing a unique window into the processes that shaped our solar system, and may give a sneak preview of the fate of the Earth’s core as it continues to freeze.

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