Tunguska…

…has been the subject of intense discussion since the nearly 800 square miles of flattened Siberian forest was examined in 1927,  nearly 20 years after the event.   Now there is a   new theory  that an asteroid caused the destruction without impacting Earth.    I’m no astrophysicist,   but I grasp that an asteroid could explode above the ground and still cause extraordinary damage.   The latest theory proposes that  “…the event was caused by an iron asteroid body,  which passed through the Earth’s atmosphere and continued to the near-solar orbit.”  OK,  I’ll bite,  but can they prove it?