Exploring the Late Heavy Bombardment

A model that describes how natural disturbances affect radioactive dating of Moon rocks finds that the Late Heavy Bombardment, a hypothesized spike in impacts about 3.9 billion years ago, may be a graphical artifact arising from a continuously decreasing frequency of asteroid and cometary impacts coupled with episodic lunar crust formation, suggesting that impacts may have played a less significant role in the formation of Earth than previously thought. - Read at PNAS.org

Article #16-11535: “Illusory Late Heavy Bombardments,” by P. Boehnke and T. Mark Harrison.