Since it's appearance, about 3,5 thousand millions years ago, life on Earth has been successively threaten.
Several species have been extincted and the scientists not been able to find out this strange yet dangerous phenomenon. It is estimated that Earth, during long periods of mass extinction, lost 75% of their living species, in other words the Blue Planet became a strange place to live. The Most famous case of species abolition is indeed the Dinosaurs.
Impact of an Asteroid:
About 65 million years ago, an asteroid (10 kilometers of diameter) impacted on New Mexico ending up to murder Dinosaurs and half of other minors species that dwelt Earth . Experts said that Planet Earth is hit with a object more than 6 kilometers of diameter every hundred million years however this shock can be enough to create earthquakes, tsunamis and darken skies and turn Earth into a harsh and unwise planet.
Volcanic Eruption:
One of Earth's deadly traps. The boiler of Yellowstone, the most ancient National Park of United States of America, has been target of several violent explosions. However if this one ever gets to have a super volcano explosion, the American continent will be destroy, air will unbreathable due to the ashes, sun will be covered up and days will turn into a volcanic winter.
The End of Sun:
Recent studies have shown that Earth will be swallow by the Sun. However, before that happens, life on Earth will turn unsustainable (Muse song ahahh) due to the extreme temperatures released by the gigantic red star that will evaporate all the existent water to space. This scenario is registered to happen in a thousand million years.
Galactic Shock:
Data removed from Hubble Space Telescope allowed to confirm that our galaxy (Milky Way) will collapse with Andromeda galaxy. This shock is foreseen to happen within 4 thousand million years. What will happen to our solar system and earth is still incognito. However it will not be relevant since life in Earth is already extinguished due to the high levels of Sun temperature.
The Uncontrollable Epidemic:
Blue planet has suffered several virus and all of them victimized millions of people. Since they are contagious and nowadays globalization transports sundries of new bacteria more resistant to antibiotics, an uncontrollable Epidemic can be one of the many causes of human's decimation.
Man:
Case to say the biggest enemy of Earth. Nuclear bombs, biological attacks, manipulation of weather through H.A.A.R.P, atmospheric, soil and water pollution. All these reasons named can turn Earth into a death pint and kill life. Matter to say these humans manipulations are they are the most dangerous catastrophes because they are programmed to happen.
Source: Visão. Sapo.pt
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