O n October 4, 1957, Earth received its first artificial satellite companion, Sputnik 1. The Soviet Union packed its ...

An emotional rescue for America came via the first U.S. artificial satellite. Explorer 1 was boosted into space by the Army on Jan. 31, 1958. Nevertheless, despite setbacks, Vanguard 1 did reach orbit ...

Sputnik 1 was the object that began the era of space exploration when it was launched from the USSR in 1957. Many people will remember the wonder of hearing the regular 'beeps' of the radio signal ...

By March 1958, puzzling data from Explorer 1 had been understood through ... of the European Space Agency's Planck satellite. The launch of Sputnik five decades ago has had profound effects.

Sputnik 1, the first human-made satellite, was launched on October 4, 1957, marking the beginning of the space age. On April 12, 1961, cosmonaut Yury A. Gagarin made history as the first human ...

November 3: Sputnik 2 carries Laika ... Yegorov all fly on Voskhod 1, the first mission to send multiple men into space. March 18: Voskhod 2 carries Pavel Belyayev and Alexei Leonov into orbit.

Sputnik 1 was the object that began the era of space exploration when it was launched from the USSR in 1957. Many people will remember the wonder of hearing the regular 'beeps' of the radio signal ...