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 ...

When we start talking about Earth's origin, there are many theories on the table that have been tossed around for years, with the Big Bang hypothesis often leading the charge. But thanks to the James ...

At first, the universe was like a hot stew. Instead of carrots and potatoes, it had particles. As the soupy universe cooled, ...

There are many open questions about how our planet formed 4.55 billion years ago: When did plate tectonics start? When did the Earth's mantle begin to vigorously circulate in a process called ...

Scientists have long believed that the Moon was formed by a massive object crashing into the Earth billions of years ago and sending chunks hurtling into space that ultimately coalesced. But what was ...