how to counter the threat of asteroids Record a stone 4.4 billion years discovered in Australia :
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Asteroids that circulate around the Earth is a very serious threat. Specialists are working hard on this problem and develop strategies to prevent these space rocks hitting our planet.
A green spot on a small screen . As trivial as it may seem , it indicates the presence of an asteroid. If one of them crashed on our planet, the consequences could be terrible . What are our options?
Record: a rock 4.4 billion years discovered in Australia
A fragment of zircon found in Western Australia has been dated at 4.4 billion years by a second method. It is indeed the oldest mineral ever found on Earth, appeared only 100 million years after its formation, at a time when we thought that there was still molten rock that ... Our planet would it cooled faster than estimated ? And could it change the period of emergence of life ?
There are 4.5 billion years , its formation, the Earth was not a blue planet, but wore the reddish hues of molten rock that composed the core to the surface. This is the time , and cooling the soil became solid and liquid water. But when was that time?
Asteroids that circulate around the Earth is a very serious threat. Specialists are working hard on this problem and develop strategies to prevent these space rocks hitting our planet.
A green spot on a small screen . As trivial as it may seem , it indicates the presence of an asteroid. If one of them crashed on our planet, the consequences could be terrible . What are our options?
Record: a rock 4.4 billion years discovered in Australia
A fragment of zircon found in Western Australia has been dated at 4.4 billion years by a second method. It is indeed the oldest mineral ever found on Earth, appeared only 100 million years after its formation, at a time when we thought that there was still molten rock that ... Our planet would it cooled faster than estimated ? And could it change the period of emergence of life ?
There are 4.5 billion years , its formation, the Earth was not a blue planet, but wore the reddish hues of molten rock that composed the core to the surface. This is the time , and cooling the soil became solid and liquid water. But when was that time?
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