TIL In the 60s/60s NASA would use brooms to detect flames from Hydrogen leaks as they were odorless & colorless. nasa.gov Submitted by Wandering_Lights t3_10p76i5 on January 30, 2023 at 4:33 PM in todayilearned 58 comments 419
wondernerd14 t1_j6jn4pc wrote on January 30, 2023 at 8:20 PM Someone was reading r/tumblr this morning. Permalink 2
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