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3 August, 19:02

Which event in space exploration would appear first on a timeline? the united states launched its first successful satellite in 1958.

Neil Armstrong and Buzz Aldrin made the first manned moon landing in 1969.

cosmonaut Yuri Gagarin became the first human in space in 1961.

the Soviet union launched the first artificial satellite, Sputnik, in 1957.

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  1. 3 August, 19:13
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    c

    Explanation:

    Cosmonaut yuri gagarin became the first human in space in 1961 is the best choice
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