December 7, 1957 (, Ding October 16), the first satellite launch vehicles fall.

1957, the USSR Academy of Sciences issued a statement, has been flying around the Earth fifty-eight days of the Soviet Union's first satellite launch vehicle, the sharp decline in December 1, into the dense atmosphere. then that burning the fall of the wreckage fell on the west coast of Alaska and North America places. This is the Soviet scientists determined based on observations.
carrier rocket at midnight on November 30 significantly decreased time soon shortened orbiting the Earth a week. December 1, when it along Irkutsk, Chukchi Peninsula, Alaska, and the North American west coast route running, especially significant to decline so that fall from the sky.
Soviet Union's first satellite launch vehicle running total thirty-nine million kilometers away. It was originally orbiting the Earth a week time is 96.2 minutes, the peak height of about nine hundred kilometers. (L $ j��.c��)