A little gravity “Britain’s biggest meteorite strike” (SN: 4/12/08, p. 238) states that “gravitational anomalies” make an offshore area a prime candidate as the possible impact site of a meteorite. Wouldn’t that be magnetic anomalies instead? If it is a gravitational anomaly, I would sure like an article on that alone! Thanks for the great magazine. PETER LINDSAY, SEATTLE, WASH. The craters from extraterrestrial impacts can create measurable gravitational as well as magnetic anomalies (SN: 6/15/02, p.