Search results
Results from the WOW.Com Content Network
Over 4.5 billion years ago, our solar system formed from a giant molecular cloud that collapsed under its own tremendous gravity. The hot stew of hydrogen and helium gave birth to our sun and flung out a wide disc of gas and particles in the surrounding space.
Earth formed about 4.5 billion years ago from the solar nebula. The origin of the Earth is a giant rotating cloud of gas and dust left over from the Sun's formation. As gravity pulled the particles together, they collided and merged, gradually building into larger bodies known as planetesimals.
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. [4][5][6] Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
By measuring the age of rocks on the moon, and meteorites found on Earth, scientists estimate the Earth consolidated by 4.54 billion years ago. The young planet had established an...
Altogether, the concordance of age dates of both the earliest terrestrial lead reservoirs and all other reservoirs within the Solar System found to date are used to support the fact that Earth and the rest of the Solar System formed at around 4.53 to 4.58 billion years ago.
Dive into the most dramatic events in Earth’s 4.5-billion-year history, from its birth to the emergence of humanity. How did a hellscape of molten lava transform into a lush, green, watery...
About 4.5 billion years ago, shortly after Earth’s formation, a massive object, sometimes referred to as “Theia,” collided with Earth. This catastrophic impact was so powerful that it led to the ejection of a significant amount of material from Earth’s mantle into space.
Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms...
From the point at which the planet first began to form, the history of Earth spans approximately 4.6 billion years. The oldest known rocks—the faux amphibolites of the Nuvvuagittuq greenstone belt in Quebec, Canada—however, have an isotopic age of 4.28 billion years.
Earth Timeline. Multicellular Organisms 2.1 BYA? Earth and Solar System Form. Moon Forms ... 10,000 years ago. Early Humans 2 MYA years ago Dinosaurs. 260–65 . MYA. 4.6 Billion Years. Ago (BYA) 1 BYA = 1,000 Million Years Ago (MYA) Land Animals 400 MYA First Animals 600 MYA. x x. x x. x x. x x. x x. x x. National Aeronautics and Space ...