April 12 is Cosmonauts' Day - the day when Russia celebrates accomplishments in space. The holiday is commemorated on April 12, because this is the day when in 1961, Yury Gagarin became the first human to fly into space. In 2011, the United Nations declared April 12 the International Day of Human Space flight.
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Low near-Earth orbits grow five times more dangerous in two decades

The risk of collision between catalogued space objects - operating satellites and space debris larger than ten centimeters - has grown five times in the past 21 years, says a report from the Information Analytic Center of the NPO Almaz-Antei Vympel Interstate Joint Stock Corporation

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