International Asteroid Day

Quick Facts - US

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2024 DateJune 30, 2024
2025 DateJune 30, 2025

International Asteroid Day

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International Asteroid Day History

International Asteroid Day aims at raising awareness about the potential risks posed by asteroids and the importance of protecting Earth from such threats. This global event emphasizes the significance of international cooperation in the development of new technologies, early-warning systems, and even potential space missions to prevent potential disasters. On this day, various events, conferences, and educational programs are organized worldwide, engaging people of all ages and backgrounds to learn more about these celestial objects and their implications for our planet's safety.

The origins of International Asteroid Day can be traced back to 2014 when it was co-founded by Dr. Brian May, astrophysicist and lead guitarist of the rock band Queen, along with filmmaker Grigorij Richters, B612 Foundation President Danica Remy, and Apollo 9 astronaut Rusty Schweickart. It was eventually recognized by the United Nations in December 2016. For Americans, International Asteroid Day is particularly significant as the country houses some of the world's leading space agencies, such as NASA, which play a crucial role in researching and monitoring these celestial bodies.

In the United States, International Asteroid Day is observed through various events organized by institutions, such as museums, planetariums, schools, observatories, and even online conferences discussing asteroid-related topics. These events aim to educate the public about the importance of monitoring and researching these celestial objects and highlight advances in our understanding of the cosmos. Additionally, American researchers and scientists often collaborate with their international counterparts, sharing their knowledge and expertise to streamline global efforts in mitigating risks associated with asteroids. International Asteroid Day is observed every year on June 30th, the same date as the infamous Tunguska Event, a massive asteroid explosion that occurred in 1908 over Siberia.

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.

Top things to do in the US for International Asteroid Day

  • 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.
  • Watch a film to learn more about Asteroids:
    Armageddon (1998) - A fictional film about a group of oil drillers sent into space to prevent a large asteroid from impacting Earth.
    Deep Impact (1998) - A film following the story of humanity as they prepare for possible extinction from an incoming comet.
    Fire in the Sky (1993) - A film based on a book about Travis Walton's supposed alien abduction in 1975.

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