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Thursday, December 08, 2022

This giant asteroid crashed on Earth 114 years ago, says NASA! Watch the shocking Tunguska incident

The largest asteroid impact in recorded history happened just 114 years ago and is now widely known as the Tunguska event, according to NASA. What happened and why is this event important to scientists? trace.

Yesterday, 30 June was observed as World Asteroid Day. The day is observed every year to spread awareness and knowledge about the dangers of asteroids and to communicate anti-crisis actions to be taken in case of asteroid impact hazard. The day was first observed in 2016 when the United Nations passed a resolution. The date was chosen deliberately because it marks the anniversary of the Tunguska event, the largest asteroid strike ever observed by humans. That one isolated event in 1908 became so historically significant that it influenced technological advances and scientific discourse in asteroid research led by NASA today. So, what happened during the Tunguska event and why is it so important? read on.

A giant asteroid exploded near the Tunguska River

114 years ago, in an area above the Tunguska River in Russia known as Krasnoyarsk Krai, a handful of people claimed a blue fireball fell from the sky. Moments later, 500,000 acres (2,150 sq km) of uninhabited forest were flattened, and the ground scorched. The tremors were felt all over the world. Although it was not known at the time, it was an asteroid explosion that caused it.

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The Tunguska incident took place in 1908, but being in a remote corner of the world, the first investigations took place until 1927. According to a report in EarthSky, Leonid Kulik led the first Soviet research expedition to investigate the Tunguska incident. However, they found no impact crater or fragments of the asteroid, which led them to dismiss the idea of ​​an asteroid strike.

It was not until then that it was understood what really happened that day. A 50–60 m wide stony space rock, the asteroid never formed on the surface and instead exploded just above the forest, causing destruction. Three people were killed and more than 80 million trees were felled in the Tunguska incident.

Tunguska is the largest cosmic impact observed by modern humans,” David Morrison, a planetary science researcher at Ames, told NASA. “It is also characterized by the kind of impact that is likely to protect us in the future.”

Today, NASA observes more than 16,000 near-Earth objects (NEOs) and plans countermeasures through its Planetary Defense Coordination Office (PDCO). It has been an integral part of the US agency observing and mapping all asteroids that may pose a threat to us.

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