gravitational waves was presented by the international scientific consortium tsum from india north america australia and europe but let's get it right, modern gravity theory predicts the existence of a special kind of gravitational waves that create ripples in space itself, as if a stone thrown into water, but without water. unlike waves, they do not need water, no medium. they exist and spread without any outside help for the first time gravitational waves were recorded in 2015. then they had a very different source of mergers of small black holes, the so-called stellar mass black holes. these small objects merge very quickly, so they send out gravitational waves in all directions relative to a height such that even the human ear could hear them when they merge, just at the frequency of the merger, it comparable to the sounds humans hear. that is, there are tens of hundreds. and if you listen closely, the sound turned out to be like this, about this frequency, and it seems to be heard by the human ear, but other sources of gravitational waves are also expected in space, presumably supermassive blac

australia, new zealand, the dutch indies, india, the near east, and the continent of africa, with their resources of raw materials, and of peoples determined to resist axis domination. look too at north americad south america. it is obvious what would happen if all of these great reservoirs of power were cut off from each other either by enemy action or by self-imposed isolation: first, in such a case, we could no longer send aid of any kind to china--to the brave people who, for nearly five years, have withstood japanese assault, destroyed hundreds of thousands of japanese soldiers and vast quantities of japanese war munitions. it is essential that we help china in her magnificent defense and in her inevitable counteroffensive--for that is one important element in the ultimate defeat of japan. second, if we lost communication with the southwest pacific, all of that area, including australia and new zealand and the dutch indies, would fall under japanese domination. japan in such a case could release great numbers of ships and men to launch attacks on a large scale against the coasts of the western hemisphere-south america and central america, and north america-including alaska. at the same