Tag Archives: Billionyearold

A view of the Earth’s interior around 1 billion years ago: Tangled magnetic field lines inside the core are linked with the Earth’s exterior magnetic field. (Scientifically correct image from a research simulation). Credit: ETH Zurich / SUS Tech A new model uncovers how Earth’s liquid core has sustained its magnetic field since the planet’s beginnings, offering new insights into …

A new study pushes the date of a Scottish meteorite impact from the often cited 1.2 billion years to about 990 million years. That single change reshapes a key chapter in Earth history and reframes when complex life began to spread beyond the oceans. The evidence sits inside a rugged slice of rock in northwest Scotland called the Stac Fada …