punctured water balloons are photographed at high speed (1000 frames/sec) in a NASA laboratory. researchers perform these experiments to investigate low-gravity phenomena. as can be seen from the experiment footage, the initial rupture process is nearly ideal, but the finite size of the balloon material eventually ejects a spray from the drop surface. then, when the balloon material leaves the drop entirely, it causes a large deformation of the drop (blob) which oscillates throughout the remainder of the test. calculations suggest that such oscillations will continue for hours before the drop eventually becomes spherical.