Add Yahoo as a preferred source to see more of our stories on Google. A rare kind of meteorite known as enstatite chondrite resembles Earth's composition roughly 4.5 billion years ago. The key to ...

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 ...

About 4.6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity. The Sun, planets, and eventually Earth formed out of the cloud. But when did ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. We have discovered the oldest meteorite impact crater on Earth, in the very ...