1 | This included a strip about the panic unleashed when it seemed a giant meteorite would hit the earth. | |
2 | Several theories link polarity flips to external disasters such as meteor impacts. | |
3 | Climate change, hunting by early humans, and even a meteorite are among theories for their abrupt disappearance. | |
4 | Critics, however, suggested that the magnetite was formed by a chemical process called thermal decomposition. | |
5 | Most meteorites, other than the ones known to come from the Moon or Mars, are relics from the formation of the solar system. |