O Mundo Assombrado Pelos Demônios - Carl Sagan

Confesso, a Autobiografia - Rob Halford

خیر باد بر کاشف مُسَکِن

Per a great suggestion from Arianna Soldadi on the other blue app, Ulexite! Also known as tv rock, it conducts light down its long axis.

Sharing the beautiful Alaskan blue skies with y’all on Bluesky! We’ve had a great first couple of days in Denali. Here are the polychrome mountains from a distance. They are a mix of basalt and rhyolite, stained red from the iron oxidizing over the years.

🙂

😃

I am working on a list of minerals with fun properties that kids might be able to test. And I was curious to get you all's thoughts! Any you'd add to the list?

To kick it off, fluorite! Shine a blacklight and watch it fluoresce.

Back on my cleaning kick, and I found this. I still stand by it being a solid joke

Hello Bluesky. Here’s a picture of the hound to kick things off