How much do you know about space ?

Asteroid, Asteroid Belt, Black Hole, Comet, Galaxy, Gravity, Light year, Meteor, Meteorite, Milky Way, Moon, Nebula, Orbit, Planet, Planetoids, Solar system, Space, Star, Sun, Universe and more definitions.
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What humanity gained from space exploration

In 1961, Soviet cosmonaut, test pilot and industrial technician Yuri Alekseyevich Gagarin became the first human to travel into space, and orbit the planet abroad the spacecraft Vostok 1...
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Yuri Gagarin: First Man in Space

Yuri Gagarin was the first person to fly in space. His flight, on April 12, 1961, lasted 108 minutes as he circled the Earth for a little more than one orbit in the Soviet Union's Vostok spacecraft.
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