Show Get Off the Earth an Order It Would Be Hard to Obey So great is the power of ot gravitation that man is practically a prisoner upon the earths earth's surface even the aviator aviator avi avi- ator who temporarily escapes to a height of feet or more Yet a a. human being might leave it forever if it he made his Departure at sufficient speed to overcome the weight of ot the ball upon which we live tons The muzzle velocity of ot a a. shell from the most powerful cannon is about feet per second but this projectile proJectile pro pro- will fall to the ground after traversing a few miles so its speed would have to be greatly exceeded by bythe bythe bythe the individual desiring to penetrate into space If a projectile could be fired at a a. arate arate rate of ot feet per second writes Charles Never Holmes in Popular Science ce Monthly it would probably fall to the surface Its rate of ot V would Just equal the terrestrial attraction so it would become a satellite satel sate lite always revolving about the earth When science makes possible an in- in fUal velocity of ot feet a second about seven miles mUes then a projectile may be started on a a. a journey from which it might never return return- This tremendous speed should enable jt to burst through the Attraction of our planet and rush on into trackless space The fact that it will not return would doubtless dampen the ardor of ot otan an adventurous passenger |