"Our movies and television programs in the fifties were full of the idea of going into space. What came as a surprise was that it was the Soviet Union that launched the first satellite. It is hard to recall the atmosphere of the time."
— John Logsdon, Dir. of Space Policy Institute
On today's date, October 4 in 1957 the Soviet Union (Russia) launched an orbital space satellite, which they called "Sputnik, after the Russian word for "satellite". As one can see from viewing the image of it above, it was a rather odd looking craft that looked something like an octopus extending it's tentacles. But in terms of the Cold War (the period from @ 1946 through the mid 80's when U.S./Soviet relations were at their most tense) it came as a rude awakening to the American people that the Soviets may have gained an edge over the in the race in the Space Race.
"Sputnik": What & Why?
"Sputnik" was was the first artificial satellite ever launched into space from earth. Measuring about 58 meters (23 inches) in diameter and weighing 184 lbs. of polished metal with four external antennas which broadcast radio signals back to earth which were strong enough to be picked up by amateur radio operators all over the world. The information being collected was tracking and studying the density of the upper atmosphere which could be deduced from "Sputnik's drag on earth's orbit, and the effects of its radio signals gave data about the
ionosphere. Traveling at 18,000 miles an hour, its elliptical orbit took it to a distance of 584 miles at it's farthest point from earth, 143 miles at its closest. And it took @ 101.5 minutes to orbit the earth. As to why the Russians launched it, well they were looking for a way to show that their system was as advanced as that in the U.S. perhaps more so. So the Soviet leader Nikita Krushchev (above) gave the program his full backing.
The Space Race
Many Americans were shocked that the Soviets that the Soviets had beaten the U.S. to the punch in such a public fashion. And they felt very uneasy about having this damned Soviet contraption flying over our skies. Perhaps the satellite could eventually be used to spy or even launch weapons on this country. Eisenhower himself (below)was not
worried about it. Many in his administration dismissed 'Sputnik" as a "useless hunk of iron". But others were more concerned. As David Halberstam wrote in The Fifties, "The success of Sputnik seemed to herald a kind of technological Pearl Harbor, which was exactly what Edward Teller said it was." Whatever the case, the Russians and the U.S. continued one-upping each other with various "firsts" - until the U.S. wrote the final note on the subject by landing Apollo 11 with Armstrong and Aldrin landing on the moon itself in July 20 of 1969, effectively handing the U.S. the win in the Space Race.
Sources =
https://en.wikipedia.org/wiki/Sputnik_1
https://www.history.com/this-day-in-history
https://www.archives.gov/education/lessons/sputnik-memo