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 ...

Crystals hidden in Australia’s oldest rocks have revealed new clues about how Earth and the Moon formed. The study suggests Earth’s continents didn’t begin growing until hundreds of millions of years ...

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon. When you purchase through links on our site, we may earn an affiliate ...

Earth is often described as a water world, but how that water arrived has never been settled. For years, the focus has rested ...

Billions of years ago, in the giant disk of dust, gas, and rocky material that orbited our young sun, larger and larger bodies coalesced to eventually give rise to the planets, moons, and asteroids we ...

Earth’s deep interior may hold water equal to today’s oceans, challenging long-held views of how the planet became habitable.

probably orbited the sun at very similar distances — like twin planets. Another explanation could be that the moon and the earth (as it is today) both received the same proportion of material from ...

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 ...