Over the Sky of Tunguska

Lecture by asteroid experts: Sabrina Masiero, Luciana Ziino and Alessandro Nastasi (GAL Hassin – International Center for Astronomical Sciences, Isnello, Palermo (Italy).
111 Years after the Tunguska Event, we talk about the largest impact event on Earth in recorded history.
Asteroid or comet? We will foucs on the Italian expeditions in Siberia, coordinated by the physicist Giuseppe Longo from University of Bologna during the 1990s and the scientific results. He extracted resin from the core of the trees in the area of impact to examine trapped particles that were present during the 1908 event.
More recently, in 2007, an Italian expeditions identified a lake in the Tunguska region as a possible impact crater from the event.