Asteroid that struck Australia may have caused climate change: Scientists

Scientists believe that an asteroid that struck Earth over 2.2 billion years ago and created Yarrabubba crater in Australia could have driven global warming. At time of collision, planet was believed to have been encased in ice and researchers believe that it was collision that began global thaw.

Asteroid strike possibly responsible for life on Earth

Researchers believe that during time of impact location was covered in a layer of ice that was 5 kilometres thick. violent impact of asteroid strike would have converted immense amounts of ice into water vapour which would have acted as a greenhouse gas and trapped heat in Earth's atmosphere.

Researchers believe that this thaw helped me Earth's atmosphere and a climate favourable for simple microbes to thrive and possibly create basis for life on Earth. asteroids strike at Yarrabubba in state of Western Australia coincides with end of deep freeze that Earth was experiencing.

Yarrabubba crater

Timmons Erickson, a scientist from NASA, studied and determined of Yarrabubba meteor crater in Australia to be 2.229 billion years old, making it oldest crater to be discovered by scientists. According to reports, Yarrabubba crater is 200 million years older than Vredefort Dome crater in South Africa, which was regarded as world's oldest until this discovery.

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research was le by Timmons Erickson with a team from Curtin University, Australia and Imperial College, London. According to reports, in order to determine of crater, team looked for samples of rocks that showed evidence of being subject to shock and heat due to a meteor strike. Although, team collected samples of rock containing two distinct materials i.e. zircon and monazite.

Yarrabubba crater in Australia is an impact structure and is eroded remains of a previous impact crater. crater is located in rrn Yilgarn Craton near Yarrabubba Station between towns of Sandstone and Meekatharra, Australia. Its 2.229 billion years of places incident at end of first when Earth was mostly frozen and is commonly kwn as Huronian Glaciation.

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