Tantalizing clues in 4-billion-year-old asteroid Bennu samples could reveal particular molecular formations that some ...

The study also provides a new approach to solving one of the biggest enduring scientific mysteries: when did plate tectonics begin?

Earth is about 4.5 billion years old. Scientists think that by 4.3 billion years ago, Earth may have developed conditions suitable to support life. The oldest known fossils, however, are only 3.7 ...

Few topics have been as contentious among both scientists and laypeople as the age of the Earth. Many scientists ... originating some 3.4 billion years ago. Stromatolites are sedimentary ...

Researchers discover Earth's first crust, formed 4.5 billion years ago, had chemical features similar to modern continental crust. (photo credit: Tanya Kalian. Via Shutterstock) A study published ...