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RT @springerastro: #OTD 60 years ago, on 16 June 1963, Valentina Tereshkova became the first woman to fly in space, orbiting the planet ove…
RT @springerastro: #OTD 60 years ago, on 16 June 1963, Valentina Tereshkova became the first woman to fly in space, orbiting the planet ove…