Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/, Russian: Спутник-1, Satellite 1) was the first artificial Earth satellite. It was launched into an elliptical low Earth...

names: Sputnik 4 – Korabl-Sputnik 1 Sputnik 5 – Korabl-Sputnik 2 Sputnik 6 – Korabl-Sputnik 3 Sputnik 7 – Tyazhely Sputnik Sputnik 8 – Venera 1 Sputnik 9 –...

Sputnik 2 (Russian pronunciation: [ˈsputʲnʲɪk], Russian: Спутник-2, Satellite 2), or Prosteyshiy Sputnik 2 (PS-2, Russian: Простейший Спутник 2, Simplest...

Korabl-Sputnik 1 (Russian: Корабль Спутник 1 meaning Vessel Satellite 1), also known as Sputnik 4 in the West, was the first test flight of the Soviet...

between the United States and Soviet Union caused by the Soviets' launch of Sputnik 1, the world's first artificial satellite. The crisis was a significant...

from Cape Canaveral Missile Annex, Florida. In response to the launch of Sputnik 1 on 4 October 1957, the U.S. restarted the Explorer program, which had...

placing Sputnik 1 into a low Earth orbit. Two versions of the Sputnik were built, the Sputnik-PS (GRAU index 8K71PS), which was used to launch Sputnik 1 and...

size, Sputnik Planitia is partially submerged in large, bright glaciers of nitrogen ice. Named after Earth's first artificial satellite, Sputnik 1, it constitutes...

previous year, Sputnik 1 and Sputnik 2. This began a Space Race during the Cold War between the two nations. Explorer 1 was launched on 1 February 1958...

atmosphere and near space. Sputnik 3 was the only Soviet satellite launched in 1958. Like its American counterpart, Vanguard 1, Sputnik 3 reached orbit during...