This is a direct copy of a SciPop or news article preserved here because things on the internet have a bad habit of disappearing when you try to find them again. Full credit is given to the original authors and the source.
– Matty
- MICHELLE STARR 25 AUGUST 2020
- Original Article
At some point in Earth’s 4.5-billion-year history, its entirely liquid iron core cooled enough to form a solid ball in the centre. Today, our planet’s core consists of a solid iron inner core surrounded by a molten iron outer core, but pinning down exactly when this change occurred has proven quite difficult.
Continue reading “Scientists Just Narrowed Down The Age of Earth’s Inner Core”
