14. A Gamma Ray Blast Could Kill Us All Any Moment
Although rare, scientists have observed gamma-ray blasts in galaxies far away, which are usually associated with the collapsing of a star. Essentially a gamma ray is an intense beam of radiation that pacts the punch of ten thousand suns. These ray blasts are so powerful that if one were to occur in our galaxy, which could happen at any time without warning, we would all be dead. End of story.