Fastest supercomputer on earth in USA again

America is now again the home of the world''s fastest supercomputer. It is still leading in many fields of scientific endeavours, 'although its economy is not as good as before and other nations are learning fast. America itself was also a fast-learning nation as it quickly landed the first human '('Neil Armstrong') on moon in 1969 soon after the Soviet Union had blasted off the first man (Yuri Gagarin) into space in 1961. In 1957, 'the Soviet Union put up the first satellite called Sputnik and it was followed very soon by the USA which also launched one in 1958.