National Geographic : 1953 Jan
,r P + l fps qz I.x y4 ^ Lw^ . -. err. ," ~... «,w w " "f , g<,.u ' , ° , F t a. v s is r s :°F' v 'v .' , ' Y' ".,..'g, . , :1': w iy AAA 110 Balloons Strain at the Leash Bef ore Launching into the Stratosphere with Cosmic-ray Counters Eric Pickup Scientists at Churchill prepare to release an unwieldy train soon after dawn, when wind is lightest. Each bag is inflatedwith ameasured amount ofgas, which expands as the train rises. Two balloons will burst halfway up, slowing ascent. When a third bursts at 20 miles, destroying lift, thetrain will settle toearth (page 107).