🌿 Tunguska and Asteroid Day (1908)
Where: Tunguska, Russia
📅 On This Day: June 30
June 30, 1908: Tunguska and Asteroid Day. On this day in 1908, a space rock exploded in the sky over Tunguska in Siberia, Russia. It knocked down millions of trees across about 2,150 square kilometers of forest. That is why the United Nations made today International Asteroid Day, to study asteroids and be prepared.
✨ More events on this day
- 1937 💡 London introduced 999, the world's first emergency telephone number, so people could quickly call for police, fire engines or ambulances.
- 1972 🔬 Clocks around the world added the first leap second, an extra second that keeps our time in step with Earth's slightly wobbly spin.
- 1973 🔬 Scientists aboard the supersonic jet Concorde 001 chased the Moon's shadow across Africa, watching a total solar eclipse for 74 minutes.
🧠 Question of the day
What was knocked down by the Tunguska blast?
- Bridges
- Forest trees
- Tall buildings
Show the answer
Answer: Forest trees
🎂 Landmarks that opened on June 30
Questions
What happened on June 30?
June 30, 1908: Tunguska and Asteroid Day. It happened in Tunguska, Russia.
Which landmarks opened on June 30?
Tower Bridge (opened 1894).
In the game, the "Today on Earth" panel shows this story on its day, with a question to answer and a place to fly to.