A mysterious 40-megaton explosion, metal fragments found at the site, the absence of an impact crater, and high levels of radiation were detected. Was it an asteroid, or could it have been the explosion of an extraterrestrial craft?
A mysterious 40-megaton explosion, metal fragments found at the site, the absence of an impact crater, and high levels of radiation were detected. Was it an asteroid, or could it have been the explosion of an extraterrestrial craft?
