| Literature DB >> 11542219 |
Abstract
Evidence indicates that the collisions of Earth and a large piece of Solar System debris such as a meteoroid, asteroid or comet caused the great extinctions of 65 million years ago, leading to the transition from the age of the dinosaurs to the age of the mammals.Entities:
Keywords: NASA Discipline Exobiology; Non-NASA Center
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Year: 1987 PMID： 11542219 DOI： 10.1063/1.881078
Source DB: PubMed Journal: Phys Today ISSN： 0031-9228 Impact factor: 4.000