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World Asteroid Day 2021: All you need to know about the day and Tunguska Event

World Asteroid Day 2021: The day is designated as the anniversary of the Tunguska impact over Siberia, which happened in 1908 by the United Nation General Assembly. Till date Tunguska is the largest asteroid that affected the earth.

June 30, 2021 / 12:16 PM IST
World Asteroid Day is observed globally every year on June 30. (Image: Wikipedia)

World Asteroid Day is observed globally every year on June 30. (Image: Wikipedia)

World Asteroid Day is observed globally every year on June 30. The day is observed to raise public awareness about the asteroid's hazardous effect and the measures that should be taken in case of a near-earth object threat.

The day is designated as the anniversary of the Tunguska impact over Siberia, which happened in 1908 by the United Nation General Assembly. Till date, Tunguska is the largest asteroid that affected the earth.

What is an Asteroid?

Small, rocky objects orbiting the Sun are known as Asteroids. It is found between the orbits of Mars and Jupiter and also known as leftover material of the Solar System. The size of pebbles to around 600 miles across is their size range. In our Solar System, there are several hundred thousand asteroids believed to exist.