Napier is best known for authoring five high tech thriller novels and a number of nonfiction science books that concern fringe and pseudoscientific theories.
"[1] And honorary professor at the Buckingham Centre for Astrobiology, University of Buckingham, which describes him as, "a pioneer of modern studies of the impact hazard due to asteroids and comets," and also as having, "carried out an investigation of long-running claims of anomalous QSO/galaxy associations.
The result of his collaboration with Victor Clube and others on the role of giant comets in Earth history is known as "coherent catastrophism.
"[3] According to Napier, 13,000 years ago the earth was affected by a major, rapid cooling event that caused the extinction of a large number of species and a major disruption of paleoindian cultures.
Napier argues for the Younger Dryas impact hypothesis that the cooling event was caused by the collision with "a dense trail of material from a large disintegrating comet,"[4] an idea that has been refuted.