But when did this impact take place? Scientists believe the moon formed during a giant impact about 60-175 million years after the solar system was born. To arrive at this estimate, they can use rocks ...

New research led by a York University professor sheds light on the earliest days of Earth's formation and potentially calls ...

The Earth was 4 billion years old then. Did the Earth have more oxygen in the past? 4 years after the Earth was formed. The atmosphere now contains almost no oxygen, as it did five billion years ago.

It can also be a saving grace for those who are afraid of giant insects. In a new study, scientists found that as temperatures have risen over the past half century, global beetle populations may have ...

"We're trying to piece together our beginnings. How did the Earth form and why is it a habitable world? What is the source of the organic molecules that make up all life on Earth?" Researchers are ...