Animations reveals Earth was pounded by asteroids and comets when it was young
10 years, 8 months ago

Animations reveals Earth was pounded by asteroids and comets when it was young

Daily Mail  

How the Earth got a facelift: Incredible animations reveal how our planet was pounded by asteroids and comets when it was young Earth formed about 4.5 billion years ago - and it is believed its first billion years were far more dramatic than previously thought Asteroids and comets repeatedly smashed into the early Earth and covered the planet's surface with molten rock Asteroids larger than 300 miles wide struck the Earth’s surface, vaporising the Earth’s oceans, and filling the atmosphere with steam. For much of its early life, Earth and its sister worlds in the inner solar system were pummeled with an extraordinary number of cosmic impacts, the new research shows THE HADEON EON The first 500 million years of the Earth's life are known as the Hadean Eon. Although this time amounts to more than 10 percent of Earth's history, little is known about it, since few rocks are known that are older than 3.8 billion years old. For much of the Hadean, Earth and its sister worlds in the inner solar system were pummeled with an extraordinary number of cosmic impacts, the new research shows.

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History of this topic

3.5 billion-year-old evidence reveals aftermath of an ancient collision
3 weeks, 4 days ago

3.5 billion-year-old evidence reveals aftermath of an ancient collision

India Today  

Researchers at Curtin University and the Geological Survey of Western Australia have made a big discovery in the Pilbara region, uncovering the world's oldest known meteorite impact crater. This ancient crater, dated to approximately 3.5 billion years ago, surpasses the previous record by over a billion years, challenging existing theories about Earth's early history. The study, published in Nature Communications, …

Ancient Meteorite's Impact Could Have Jumpstarted Life on Earth
5 months, 1 week ago

Ancient Meteorite's Impact Could Have Jumpstarted Life on Earth

Firstpost  

A colossal meteorite, approximately 200 times larger than the one that ended the age of dinosaurs, might have created an even bigger impact — jumpstarting life on Earth. The impact carved out a 500km-wide crater in land and hurled pulverised rock at extreme fast speeds, forming a cloud that circled the globe. The skies would have turned black, choked with …

Meteorite impacts led to formation of continents on Earth?
2 years, 7 months ago

Meteorite impacts led to formation of continents on Earth?

Hindustan Times  

The much debated phenomenon of formation of continents has got another dimension added to it. Scientists have found substantial evidence to support the theory that giant meteorite impacts were responsible for the formation of continents. The study published in Nature journal found that Earth’s continents were formed by gigantic meteorite impacts that were predominant during the first billion years of …

Study Uncovers Evidence of Continents Being Created By Giant Meteorite Impacts
2 years, 7 months ago

Study Uncovers Evidence of Continents Being Created By Giant Meteorite Impacts

News 18  

The continents of Earth were formed by gigantic meteorite impacts that were particularly prevalent during the first billion years of our planet’s four and a half billion year history, according to new Curtin research, which has presented the strongest proof to yet. Dr Tim Johnson, from Curtin’s School of Earth and Planetary Sciences, said the idea that the continents originally …

Huge meteorite impacts have reshaped the Earth, scientists say
2 years, 7 months ago

Huge meteorite impacts have reshaped the Earth, scientists say

The Independent  

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Huge meteorites that smashed into the Earth helped create the continents, scientists have …

Meteorite that landed on Earth 200 years ago upends previous theories of how Mars formed
2 years, 9 months ago

Meteorite that landed on Earth 200 years ago upends previous theories of how Mars formed

Daily Mail  

A meteorite that hit Earth more than 200 years ago could fundamentally change our understanding of how Mars was formed. New analysis of Chassingy suggests that the interior chemical make-up of Mars largely came from meteorite collisions, rather than from a giant cloud of gas called the solar nebula as previously thought. Mars is of special interest because it formed …

Question Corner | Was the evolution of the Earth’s atmosphere affected by asteroid, comet strikes?
3 years, 5 months ago

Question Corner | Was the evolution of the Earth’s atmosphere affected by asteroid, comet strikes?

The Hindu  

Between 2.5 and 4 billion years ago it was not uncommon for asteroids or comets to hit the Earth. The researchers found existing planetary bombardment models underestimate how frequently asteroids and comets would hit Earth. The new, higher collision rate suggest impactors hit the planet roughly every 15 million years, about 10 times higher than current models. The findings align …

Asteroid impacts millions of years ago helped form Earth’s crust, continents
6 years, 1 month ago

Asteroid impacts millions of years ago helped form Earth’s crust, continents

Firstpost  

During the Hadean eon in Earth’s history, the planet was constantly bombarded by asteroids: Study. By studying the younger impact melt sheet of the Sudbury Igneous Complex in Canada, the team inferred that ancient asteroid impacts were capable of producing various rock types from the earlier Earth’s basaltic crust. The SIC is the largest, best exposed and accessible asteroid impact …

Oldest known rocks have distinct features resembling those of asteroids: Study
6 years, 7 months ago

Oldest known rocks have distinct features resembling those of asteroids: Study

Firstpost  

The melting of these rocks is best explained by meteorite impacts, according to the study The oldest evolved rocks on Earth are the consequence of asteroids colliding with the the planet 4 billion years ago, a study Australian research released on Tuesday, 16 August revealed. The study by the Curtin University published in Nature Geoscience suggests that the rocks, part …

Asteroid that killed dinosaurs may have punctured Earth's crust: study
8 years, 4 months ago

Asteroid that killed dinosaurs may have punctured Earth's crust: study

India TV News  

The asteroid which killed the age of dinosaurs about 65 million years ago may have nearly punctured the Earth's crust, and temporarily caused the surface of the planet to behave like a slow-moving fluid, a new study has revealed. The crater resulted from the epic crash of an object about 10 kilometre wide, and the resulting impact is thought to …

Stunning animation reveals how the asteroid that killed the dinosaurs PUNCTURED Earth's crust creating 'instant Himalayas'
8 years, 4 months ago

Stunning animation reveals how the asteroid that killed the dinosaurs PUNCTURED Earth's crust creating 'instant Himalayas'

Daily Mail  

Around 66 million years ago, a massive asteroid crashed into the Gulf of Mexico. After the asteroid had hit, the researchers believe that the Earth would have behaved like a 'slow-moving fluid' PEAK RINGS Large craters often have rings of hills, known as 'peak' rings in their centre. The earth would have then begun to flow to fill in the …

Earth-forming ancient rock back after deep space sojourn
8 years, 11 months ago

Earth-forming ancient rock back after deep space sojourn

India TV News  

London:It may give you goosebumps but researchers now report that an ancient rocky body from Earth's formation has returned after billions of years in cold storage somewhere in deep space. It was expelled from the inner solar system and preserved in the deep freeze of the Oort Cloud for billions of years, said lead author Karen Meech from the University …

Massive meteorite shower pummeled Earth for 100 MILLION years
9 years, 6 months ago

Massive meteorite shower pummeled Earth for 100 MILLION years

Daily Mail  

In its early life, Earth suffered a meteorite pummeling that lasted 100 million years. Scroll down for video In its early life, Earth suffered a meteorite pummeling that lasted 100 million years. And it could also explain why certain rare-earth elements in Earth’s mantle do not seem to originate from the planet’s other building blocks - meteorites. In the young …

Giant asteroids wiped out life on early Earth
10 years, 8 months ago

Giant asteroids wiped out life on early Earth

India TV News  

Washington: Using a computer simulation model based on a moon crater, planetary scientists have revealed that early Earth is likely to have been hit by giant asteroids capable of killing off life and completely resurfacing the planet. "But melting and reforming of Earth's crust has wiped clean any sign of early impacts, making it difficult to work out how often …

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