I archive a lot of shit. I've been archiving YouToob videos for the past few years. Nearly 20% of my archived collection is no longer available on YouTube:

https://battlepenguin.com/tech/the-disappearing-videos-of-youtube/

I wrote a tool if you want to check your collection too:

https://gitlab.com/djsumdog/youboot

@djsumdog
Would you happen to have collected any of those NASA videos of the sun's heart beat?

By the time I realized that youtube was culling science videos it was already long gone.

I don't think so? If you know the channel name I can check, but I don't recall those ... that is a bizarre thing to cull. Maybe they were on an unofficial channel and the original owners wanted people to go to theirs instead?

@djsumdog
Not sure. A few years back, NASA put a lot of money into monitoring the sun. And, there was amazing videos everywhere. Some showed a literal ripple happening inside of the sun spots.

I've probably spent 100hrs looking for them when I realized they were gone. But, have not found them.

That's suuuuper weird. I need to do a post on "The Disappear Internet" at some point .. it's sad how shitty all of our search engines are right now