Here is a decent quick guide to tell different artifacts in the sky apart:What makes you say they are artificial? They look very similar as many of my meteor shots, like the one on my neowise picture.
Look! Up in the sky! It's ... Sometimes, you just want to know what kind of object is passing through your star trails or star stack. Why? Could be for any reason, but the most obvious is that in post-production you might prefer eliminating one type of streak in the sky while not eliminating anothe
I'm with Aussie shooter here, the two solid white lines in the first image are 100% not meteors.