- This event has passed.
International Asteroid Day
June 30
Mark your calendar: June 30, 2026 is International Asteroid Day. However you observe it, make it a good one.
Photo: The raw data is public domain in the United States per PD-USGov-NASA: Seaman, R.S., Christensen, E.J., Gibbs, A., Shelly, F.C., and Larson, S., Catalina Sky Survey Bundle V1.0, urn:nasa:pds:gbo.ast.ca via Wikimedia Commons.