What happens if the asteroid Bennu crashes into the Earth?

The scientists revealed the situation of the earth if a large asteroid hit by the world commercial center complex. The study published on February 5 in Science Advances magazine based on the asteroid Bennu that NASA considered was the biggest threat to the Earth in terms of distance and impact force. This planet has a diameter of 0.5 km and is estimated at 67 million tons.

“The instant effects of the collision with a large asteroid like Bennu can cause strong damage around the collision area,” Axel Timmermann, director at the Institute of Climate Physics Science Center at the National University Pusan, South Korea, said. “But a large amount of matter fired from the collision will leave a longer consequence with the climate of the Earth and can affect human society globally.”

Bennu is much smaller than 10 km wide meteorite, creating Chixulub hole mouth and wiping out dinosaurs about 66 million years ago. However, even large asteroids can significantly reduce global food production and climate change in the world. Near the collision, the instant consequences are very clear. The collision will create strong shock waves, thermal radiation, earthquake, tsunamis, holes and rocks. Timmerman’s research team focused primarily on the climate and ecological effects of several hundred million tons of dust shot at the rooftop from the initial collision.

Using a supercomputer model, researchers show that such a large cloud can cause global temperatures to decrease by 4 degrees Celsius and rainfall decreased by about 15%. Blind dust can lead to global winter with weak sunlight, cold temperatures and rainfall fall. This will slow down the growth of land on the mainland and photosynthesis in the ocean.

In total, the photosynthetic prediction model of plants across the globe decreased by 30%, threatening food security. Changes in the weather model may last more than 4 years after the initial collision. The dust column can also puncture the ozone layer. However, not every organization is affected. If the collision produces iron -rich dust, some types of algae in the ocean may bloom. They can offer options to replace foods made on land.

Despite the need to consider risks, the possibility of Bennu stabbed into the Earth in 2182 was only 1/2,700. Scientists NASA are still studying everything about meteorites that are said to break from a asteroid larger than 700 million – 2 billion years ago. In 2016, NASA once brought the Osiris-Rex spacecraft to this asteroid to collect a sample on the surface and bring it to the Earth in 2023.