Tweak says, "You'd have to have been there!"
https://www.newscientist.com/article/2119789-oxygen-ions-sent-from-earth-have-been-spotted-on-the-moon/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=news&campaign_id=RSS%7CNSNS-news
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