In these rocks, the first signs of life were recorded 3.7 billion years ago. The discovery of an iron ore, magnetite, in Greenland serves as evidence of the Earth's ancient magnetic field, vital for life's protection from radiation.
Its range extends hundreds of kilometers beyond the atmosphere, shielding life from harmful cosmic radiation and solar wind. The presence of Earth's magnetic field is crucial for supporting life and understanding planetary conditions.
[
add
]
[
|
|
...
]