in the formation of the Hellas impact basin during the period of heavy bombardment.
He has published extensively on the importance of tidal disruption and the Yarkovsky and YORP effects on the physical structure and orbits of asteroids, and the early solar system, particularly the Late Heavy Bombardment.
Heavy metal music | heavy metal | Late Show with David Letterman | heavy metal music | Late Night with Conan O'Brien | Late Night with David Letterman | Kawasaki Heavy Industries | The Rich Pay Late | Late Cretaceous | The Late Late Show | The Late Late Show with Craig Ferguson | Late Night with Jimmy Fallon | Late Middle Ages | Late Night Poker | Late Antiquity | Late Latin | Mitsubishi Heavy Industries | Late Triassic | Late Jurassic | Heavy Metal | Heavy D | Never Too Late | Kawasaki Heavy Industries Motorcycle & Engine | Heavy Metal (magazine) | Heavy metal | Late | KPV heavy machine gun | The Late Show | Heavy Metal Parking Lot | Late Kick Off |
It is generally believed that about 3.8 billion years ago, after a period known as the Late Heavy Bombardment, most of the planetesimals within the Solar System had either been ejected from the Solar System entirely, into distant eccentric orbits such as the Oort cloud, or had collided with larger objects due to the regular gravitational nudges from the giant planets (particularly Jupiter and Neptune).