NASA warns of "volcanic winter": its devastating consequences on the planet - ناسا تحذر من «الشتاء البركاني

• NASA experts have warned of a "volcanic winter" that could kill millions of people as a result of a volcano eruption, asserting that its consequences would be more destructive than those of a meteorite on Earth.

When NASA experts looked for the best solution to the eruption of the Yellowstone volcano, they found that the massive volcano could be calmed by the possibility of increasing the volume of water in a warm spring in the crater to "cool" it.

NASA experts said on Sunday there were about 20 huge volcanoes known on the planet, with large explosions occurring on average every 100,000 years.

Experts believe that one of the greatest threats that a volcanic eruption can cause is famine, with a prolonged volcanic winter that is likely to prevent human civilization from getting enough food for the current population.

The United Nations estimated in 2012 that the world's food reserves could last for 74 days.

Volcanic winter refers to massive impacts on the Earth, which are caused by a large drop in temperature due to volcanic ash and sulfuric acid droplets. The sun is blocked from reaching the surface of the Earth and thus the whiteness increases. This occurs especially because of volcanoes.

The recovery from this phenomenon depends mainly on the amount of sulphide compounds in the stratospheric atmosphere, and the activities that occur in the lower atmosphere such as rain do not affect them greatly and therefore it takes a long time to recover from the effects of sulphide, and that is why this layer Sun rays will block access to the troposphere and to the Earth as well, thereby reducing their temperature while absorbing the minimum of that layer to the already little heat remaining on Earth.