History space

The space between galaxies is not completely empty but has an average of one atom per cubic meter. ... There are an estimated 100-400 billion stars in our galaxy, the Milky Way. The universe is observed to be 13.8 billion years old and has been expanding since its formation in the Big Bang.

The first human to go into space, Yuri Gagarin, was launched, again by the Soviet Union, for a one-orbit journey around Earth on April 12, 1961.

Yuri Alekseyevich Gagarin (9 March 1934 – 27 March 1968) was a Soviet pilot and cosmonaut who became the first human to journey into outer space, achieving a major milestone in the Space Race; his capsule, Vostok 1, completed one orbit of Earth on 12 April 1961 and he is Russian