User talk:72.195.232.12

September 2021
Hello, I'm Cassiopeia. I noticed that you made a change to an article, Aerospace engineering, 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  04:12, 9 September 2021 (UTC)