Massimo(@Rainmaker1973):This perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the Earth’s magnetic field went haywire. The ancient kauri tree in New Zealand has provided a record of the Laschamp excursion, a temporary reversal of Earth's magnetic poles. During this event, the magnetic field weakened to 28% of its strength, exposing the planet to intense cosmic radiation.

Massimo

@Rainmaker1973

Engineer. Selecting and curating pictures and videos trying to awaken your sense of wonder since 2014. Science, tech, art, weather, space, the unusual around us

Joined August 2010

173 Following 4.4M Followers

Massimo@Rainmaker1973

2026.09.15 08:16

This perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the Earth’s magnetic field went haywire. The ancient kauri tree in New Zealand has provided a record of the Laschamp excursion, a temporary reversal of Earth's magnetic poles. During this event, the magnetic field weakened to 28% of its strength, exposing the planet to intense cosmic radiation.