The world changed on Oct. 4, 1957, when the Soviet Union successfully launched Sputnik from the Baikonur Cosmodrome in Kazakhstan. The world's first artificial satellite was about the size of a beach ball, about 23 inches in diameter and weighing less than 190 pounds. As always, more on nasa.gov! Credit: NASA #nasa #sputnik #history #spaceexploration #technology #nasatech #techtuesday #satellite