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Re:What Causes Lightning? The Answer Keeps Getting More Inte... by freehorse on Saturday May 09, 2026 @05:45AM (#48073565)
Tl;dr lightings may be caused by electrons/positrons from outer space hitting a cloud and initiating an "avalanche" of electrons.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by pfdietz on Saturday May 09, 2026 @06:27AM (#48073765)
Cosmic rays are mostly protons, not electrons or positrons. You're mixing up to separate theories in the article.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by nirse on Saturday May 09, 2026 @08:17AM (#48074371)
Well, the primary particles that hit the atmosphere are mostly protons. They cause avalanche of secondaires that are varied but mostly muons,
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by sidewndr46 on Saturday May 09, 2026 @11:11AM (#48075612)
As others have mentioned you are correct. But Earth's atmosphere has plenty of all forms of matter. A proton can interact with mostly anything and accelerate it. So you can find high energy everything in low earth orbit.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by nephihaha on Saturday May 09, 2026 @07:30AM (#48074070)
Much of the time they occur when two weather fronts of different temperatures collide with each other.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by xattt on Saturday May 09, 2026 @09:16AM (#48074746)
There’s a video of an EF5 tornado from the last 24-48 hours that shows continuous lightning in the background.

There hasn’t been an increase in background cosmic rays, so likely the mechanism for lightning generation is likely a continuum in different scenarios. Cosmic rays are one, but not all.

Re:What Causes Lightning? The Answer Keeps Getting More Inte... by aaarrm on Saturday May 09, 2026 @11:41AM (#48075846)
I tried to find this after reading your comment and the amount of nonsense AI tornado videos is a lot to wade through. Wasn't able to find it.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by xattt on Saturday May 09, 2026 @02:16PM (#48076997)
This was it on Reddit: https://www.reddit.com/r/mildyinteresting/comments/1t7jlat/a...

Despite the title, the video shows a really strong mesocyclone as there is a break between the cloud and the ground. The funnel might be visible, but it’s not as big as the video makes you think.

Re:What Causes Lightning? The Answer Keeps Getting More Inte... by safeimp on Saturday May 09, 2026 @06:25PM (#48078876)
This video was a repost btw, it's from 2025:

https://en.wikipedia.org/wiki/2025_Enderlin_tornado#Tornado_...

Re:What Causes Lightning? The Answer Keeps Getting More Inte... by ambicapter on Sunday May 10, 2026 @12:35AM (#48081034)
Orrrrrr, there are always tons of cosmic rays of the type that create lightning hitting earth, there just aren't the conditions necessary for those rays to trigger lightning except for when there's a big storm. I imagine the clouds are a different electrical environment than a regular sky and maybe in those conditions a cosmic rays will trigger lightning. Like a gigantic bubble chamber made of our atmosphere.
Re:What Causes Lightning? The Answer Keeps Getting More Inte... by themaninthedark on Sunday May 10, 2026 @09:32AM (#48083838)
Volcanic eruptions are also known to have lightning in the eruption plume.