Show 4 Y GRAVITY AFFECTS MOON I 4 I n i s 1 rs Y W 0 t tt t f k k f t 2 is isa v a 8 d Y r a r 3 i THE MOON Far AT LAST QUARTER SHOWING CRATERS TAKEN WITH THE INCH REFLECTOR AT THE MOUNT WILSON SON OF THE C INSTITUTION OF WASHINGTON WASHING t WASHINGTON May 28 AP AP- AP Dr Fred Tred E E. Wright of the staff of ot the Carnegie Institution chairman of a committee of distinguished scientists scientists scientists who are making a special study of the moon Is convinced that gravity is one of ot the most important of the many factors which must be taken into account in the consideration consideration of ot ge geological problems On th the moon the gravitational pull is only about sixth one of ot that on the earth and Is too weak even evento evento evento to hold an atmosphere to the surface sur sur- face Under such conditions he explains a 75 millimeter ter gun which has a range of five to eight ight mires miles mileson on the earth would shoot from to miles on the moon while the Big Bertha which threw shells into Paris from a a. dist distance of 72 miles during the Y World war would be able to hit an object 2250 miles aw awa away ay Materials hurled into space by vol volcanic action with with initial initial velocities velocities velocities ties comparable to those on oh th earth would be flung far out Instead in instead instead In- In stead of ot falling back hack into the crater cra cra- ter This he thinks could account for tor the cleanly appearance of ot some of ot the craters disclosed In photographs of th the moon Even if It the craters raters are not volcanic volcanic vol vol vol- I canic canie in origin but are caused by meteors as ope one theory explains them the lack of gravitational force would still be a factor the absence of atmosphere would permit permit permit per per- mit them to strike the moon with speed and penetrate the crust to a considerable depth setting setting setting set set- ting up an aur aureole ole of Intense compression compression com com- which would rebound reb und elastically elastically elas- elas and eject a quantity of ma material aerial |