Researchers who compared levels of three potassium isotopes in surface rocks and primordial rocks found a deficit of one ...

Scientists at MIT and elsewhere have discovered extremely rare remnants of "proto Earth," which formed about 4.5 billion ...

Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects ...

A bright fireball streaked across the sky above mountains, glaciers and spruce forest near the town of Revelstoke in British Columbia, Canada, on the evening of March 31, 1965. Fragments of this ...

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon. When you purchase through links on our site, we may earn an affiliate ...

Researchers discovered a new field of ancient tektites in South Australia, revealing a long-forgotten asteroid impact. These ...

This Tuesday is Earth Day. The universe is understood to have formed about 13.8 billion years ago, and Earth formed about 4.5 billion years ago. As we “modern” humans (evolving into Homo Sapiens about ...

If you were to imagine all of Earth's history as just one day, as in Carl Sagan's cosmic calendar, humans wouldn't arrive ...