User talk:2409:4072:48A:197A:65E8:A85A:A0DA:2184

March 2021
Hello, I'm Cassiopeia. I noticed that you made a change to an article, Acta Astronautica, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks.  Cassiopeia(talk) 09:03, 21 March 2021 (UTC)
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