Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead suggesting giant voids in space are creating an illusion. When you purchase ...

"This is maybe the first direct evidence that we've preserved the proto-Earth materials." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.