First Tunguska Meteorite Fragments Discovered | MIT Technology Review
via @SaYo555さん
@alt_azさん
@AvellSkyさん
発見を疑問視:SatTrackCam Leiden station (b)log: No, fragments of the Tunguska object have not been found - or at least there is no real positive proof of that
via @AvellSkyさん