Article on how the picture was made: https://petapixel.com/2020/04/28/this-once-in-a-lifetime-meteor-photo-was-captured-by-accident/
Link to the photograph website: https://www.prasenjeetyadav.com/#explore
Rules:
1.. Please mark original photos with [OC] in the title if you're the photographer
2..Pictures containing a politician from any country or planet are prohibited, this is a community voted on rule.
3.. Image must be a photograph, no AI or digital art.
4.. No NSFW/Cosplay/Spam/Trolling images.
5.. Be civil. No racism or bigotry.
Photo of the Week Rule(s):
1.. On Fridays, the most upvoted original, marked [OC], photo posted between Friday and Thursday will be the next week's banner and featured photo.
2.. The weekly photos will be saved for an end of the year run off.
Instance-wide rules always apply. https://mastodon.world/about
Probably nickel and/or salts of barium. Copper burns blue as a pyrotechnic colorant.
Ah ok. I was going to say nickel but I did a quick search and somehow I read that it was copper.
Depending on the salt you can make both blue and green. Copper sulphate flame test is a pretty common school lab practical isn't it?