David S. F. Portreeさんのイラストまとめ
@dsfpspacefl1ghtFollow @dsfpspacefl1ghtさんをフォローする
Historian in STEM. Former NASA and US Geological Survey historian, educator, and archivist. Public historian. I like to tell people about cool things. He/him.
spaceflighthistory.blogspot.comフォロー数：1461 フォロワー数：4654
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As Cassini approaches its destiny, I look to the past to see possible futures: https://t.co/xfQmzNfOhX and https://t.co/tth6r1kepc
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This "Apollo leads to moon base" post is very popular - check it out. I can never guess which posts will take off! https://t.co/ZkCQQqVVEw
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