Space & PhysicsThe Craters of the MoonPossible Light on Their Origin , from Experiments with Airplane Bombs at Langley FieldBy J. F. Springer on June 18, 1921AdvertisementABOUT THE AUTHOR(S)Recent Articles by J. F. SpringerCoal Piles that Light ThemselvesStudying Fire Risks from Sample FiresSome Great Dredges