The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

An AI simulation of an impact shows basalt-rich (purple) and basalt-poor (green) regions. (Curtin University) The planet ...

Both the moon and Earth were pummeled by an unrelenting cosmic barrage, and this bombardment had profound effects on the development of our planet. Researchers from Curtin University in Australia ...

Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past. But much of its earliest history remains a mystery. Scant geological ...

In Earth’s early days, more than 4 billion years ago, the surface was a dangerous and unpredictable place. Violent volcanoes, crashing meteorites, and constant tectonic activity repeatedly resurfaced ...

Earth formed 4.54 billion years ago. The first period of the history of the Earth was known as the Hadean Period which lasted from 4.54 billion to 4 billion years ago. During that time, Earth was ...

A new study says repeated asteroid impacts drove heat deep into the young Earth and kept its crust weak. This suggests heavy bombardment may have helped form continents while erasing most Hadean rocks ...

New ANU research is set to radically overturn the conventional wisdom that early Earth was a hellish planet barren of continents. An international research team led by Professor Mark Harrison of the ...