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5 Sep 2017
First artificial satellite
First life form in space.
USA first Artifiacial satellite
First space craft to gain orbit of the moon.
Luna 2 becomes the first man-made object to land on the moon
First manned spaceflight and first manned orbital flight (Yuri Gagarin)
USA's first spaceflight with humans (Alan Shepherd)
USA's first orbital flight with humans (John Glenn)
First planetary flyby (Venus)
Valentina Tereshkova first woman in space
First extra-vehicular activity ("spacewalk") (Aleksei Leonov)
First soft landing on another planet or moon (the Moon), first photos from another world
First impact into another planet (Venus)
First artificial satellite around another world (the Moon)
First US probe lands on the moon
First humans to orbit another world (the Moon) (James Lovell, Frank Borman, Bill Anders)
Neil Armstrong and Buzz Aldrin land on the moon
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