On this day (1/31/1958) U.S. enters space age with launch of Explorer 1, its first satellite. via /r/spaceporn https://ift.tt/2u7SADZ
via Tumblr https://ift.tt/2uc7Pfd
On this day (1/31/1958) U.S. enters space age with launch of Explorer 1, its first satellite. via /r/spaceporn https://ift.tt/2u7SADZ
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