Max and Nike

1- What happened?
2- When?
3- Where?
4- Who investigated it first?
5- What did the scientists find out later?
6- Can we explain the mystery now?
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1.2.3. On 30 june,1908 a huge  fireball crossed the night sky and then exploded.Siberia in Russia,in a place called Tunguska.
4. Leonid Kulik is the first Soviet scientist who visited Tunguska.
5. I think they noting find.
6. There are no answers yet.