First time I have heard of Thunderholes. Don’t understand how they are formed from article.
Any Freepers collect Micrometeorites? Looking for inexpensive way to photograph micrometeorites and how I can test ‘possibles’ myself to authenticate. Just starting to look into it.
I have been studying and collecting meteorites for decades, small collection though as I keep selling them to purchase new ones.
I think the group that works on this Phaethon hypothesis pretty much invented the term “thunderholes”. They don’t look like sinkholes so much as some kind of enigmatic excavations.