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Sputnik 1 (Russian: "Cпутник-1" Russian pronunciation: [ˈsputʲnʲək], "Satellite-1", ПС-1 (PS-1, i.e. "Простейший Спутник-1",was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957. The surprise success precipitated the American Sputnik crisis, began the Space Age and triggered the Space Race, a part of the larger Cold War. The launch ushered in new political, military, technological, and scientific developments

This Day in Science History Oct 4, 1957: Soviet Union launches Sputnik I The successful launch of the unmanned satellite Sputnik I by the Soviet Union in October 1957 shocks and frightens many Americans. As the tiny satellite orbited the earth, Americans reacted with dismay that the Soviets could have gotten so far ahead of the supposedly technologically superior United States.

On October 4, 1957, the Soviets successfully launched the world's first artificial satellite, Sputnik 1. It was about the size of a basketball, weighed only 183 pounds, and took about 98 minutes to orbit the earth on its elliptical path.

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Sputnik from the Historic Robotic Spacecraft Series

Sputnik was the first artificial Earth satellite. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. Launched by the Soviet Union in 1957. Buy it as a limited edition silkscreen print or as an archival digital print: http://chopshopstore.com/index.php/themed/space/sputnik.html

Located approximately 7,000 light-years from Earth and nestled in the constellation Serpens lays the ultimate stellar nursery: the Eagle Nebula. This planetary nebula is home to seven strikingly beautiful pillars, most commonly referred to as the “Pillars of Creation," because it is in these towers that new stars are formed.

The first human in space, Yuri Gagarin (9.3.1934 – 27.3.1968). In his Vostok spacecraft he completed an orbit of the Earth on 12 April 1961.

The second atomic bomb nicknamed 'Little Boy' was dropped on Nagasaki, Japan at 11:01 am on August 9, 1945.

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Up for Bids: Classic Soviet Space Propaganda Posters

Propaganda

Sputnik: The Soviet Union launched the first Sputnik satellite on October, 4 1957, ushering in the age of space exploration and kicking off an intense space race with the United States. (Photo Credit: Corbis/Sergei Chirikov/epa)

Vostok 1 (Russian: Восток-1, East 1 or Orient 1) - the first spaceflight in the Vostok program and the first human spaceflight in history

Cages with typhus carrying lice strapped onto a person's thigh. During World War II, feeding the lice with human subjects' blood was the only way to produce a viable typhus vaccine.