International Asteroid Day

International Asteroid Day History

International Asteroid Day is a global event that aims to raise awareness about the importance of space exploration and the need to protect our planet from asteroid impacts. It was initiated in 2015 by a group of concerned scientists, astronauts, and enthusiasts, including astrophysicist Brian May and filmmaker Grig Richters. The date of June 30th was chosen to commemorate the Tunguska event, a massive explosion caused by an asteroid impact in Siberia on June 30th, 1908.

In Canada, International Asteroid Day is celebrated with various events and activities, such as public lectures and stargazing parties organized by astronomy clubs, universities, and museums. The Canadian Space Agency (CSA) also participates in the event by highlighting Canada's expertise in asteroid research and its efforts to improve planetary defense. In 2019, the CSA announced its participation in NASA's Double Asteroid Redirection Test (DART) mission, a planetary defense project aimed at deflecting the trajectory of an asteroid in space. International Asteroid Day is observed annually on June 30th.

Top 10 Facts for 2026 International Asteroid Day in Canada

• The theme for the 2026 observance is “Planetary Defence and Asteroid Impact Hazards,” focusing on the necessity of global cooperation in asteroid detection, scientific research, and safety planning.
• International Asteroid Day emphasizes preparing for the 2029 approach of the asteroid 99942 Apophis, a significant celestial event that serves as a focal point for global awareness campaigns.
• The United Nations designated this annual observance to raise public awareness about asteroid impact risks and the crisis communication actions required at a global level for potential near-Earth object threats.
• The date commemorates the 1908 Tunguska event in Siberia, which remains the largest recorded asteroid impact in modern history, having flattened an estimated 80 million trees across 2,000 square kilometres.
• Co-founded by Queen guitarist and astrophysicist Dr. Brian May, along with filmmaker Grigorij Richters, Apollo 9 astronaut Rusty Schweickart, and B612 Foundation president Danica Remy, the movement aims to educate the public on space safety.
• Supporters of this initiative often refer to the “100X Declaration,” a foundational document created in 2014 that appeals for increased efforts in detecting and tracking near-Earth asteroids.
• Across Canada and globally, the day is marked by educational programming, including lectures, science center activities, and digital content designed to help the public understand both the dangers and the scientific value of asteroids.
• Astronomers and space agencies worldwide utilize this time to highlight progress in planetary defense, such as the development of monitoring systems like NASA’s Sentry, which tracks potential future impacts.
• The observance fosters international collaboration among organizations like the Committee on the Peaceful Uses of Outer Space (COPUOS) and the International Asteroid Warning Network (IAWN) to mitigate cosmic risks.
• Beyond the hazards, the day serves as a platform to discuss the resource potential of asteroids and their importance in understanding the origins of the solar system.

In the News and Trending in Canada for International Asteroid Day

Top things to do in Canada 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 Fireball: Visitors from Darker Worlds (2020). Directed by Werner Herzog and Clive Oppenheimer, this documentary explores the cultural, scientific, and historical significance of meteorites and impact craters, including Canada's Mistastin Lake Crater.
• Read a book to learn more about asteroids in Canada. Here are some suggestions:
  1. The Canadian Space Program: From Black Brant to the International Space Station by Andrew B. Godefroy
  2. Canada and Outer Space: 50 Years in the Making edited by David Wright and Geoffrey Simmins
  3. Canada: 150 Years of Exploration and Science by Canadian Space Agency