Two Meteorites of Unusually Short Cosmic-Ray Exposure Age

See allHide authors and affiliations

Science  19 Oct 1962:
Vol. 138, Issue 3538, pp. 431-433
DOI: 10.1126/science.138.3538.431


The chondrites Cold Bokkeveld and Farmington seem to have reached the earth less than 200,000 years after they left their parent body. Either these meteorites came from the moon, or, more probably, the collision life times of interplanetary objects are occasionally much shorter than has been assumed heretofore.