International Asteroid Day

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2023 Date30 June 2023
2024 Date30 June 2024
International Asteroid Day

International Asteroid Day History

The International Asteroid Day is a global awareness observance that aims to educate and inspire people to know more about asteroids, their part in the formation of the universe, and how they can be useful. The observance was founded by the astrophysicist Dr. Brian May. In 2016, the asteroid day was officially observed by the United Nations. The observance occurs annually on June 30th. This date was chosen because it marks the anniversary of the Tunguska Impact in 1908.

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International Asteroid Day Facts

  • According to, there are more than 600,000 known asteroids in our solar system.
  • The word asteroid was coined by astronomer William Herschel in 1802. It means star like.
  • According to, the first asteroid was discovered in 1801 by Giuseppe Piazzi. It was named Ceres and was 580 miles across.
  • The asteroid collision 65 million years ago led to the extinction of the dinosaurs. It also affected most of the life on Earth.

International Asteroid Day Top Events and Things to Do

  • Tune into the 2021 Asteroid Day program. The program will include interviews with different personnel, it will explore how technologies have changed, and it will explore what the future has in store for asteroid research.
  • Stay informed about upcoming news and events. Asteroid Day periodically posts information about new asteroids that catch NASA's eye. They also feature virtual events or webinars with astronomers and scientists.
  • Watch a panel of experts and scientists and hear what they have to say about asteroids and space.

International Asteroid Day - References and Related Sites International Asteroid Day Facts about Asteroids

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