When was Sputnik 1 launched?

When was Sputnik 1 launched? Correct Answer 1957

History changed on October 4, 1957, when the Soviet Union successfully launched Sputnik I. The world's first artificial satellite was about the size of a beach ball (58 cm.or 22.8 inches in diameter), weighed only 83.6 kg. or 183.9 pounds, and took about 98 minutes to orbit the Earth on its elliptical path.

Related Questions

Sputnik V is launched by which institute?
If in a certain coding language, 'COVAXIN' is written as '14-9-24-1-22-15-3'. How will 'SPUTNIK' be written in that code language?