the.com/promethium
the only rare-earth element with no stable form, glowing faint blue as it self-destructs
no stable isotopeevery version is radioactive, decaying constantly
named forPrometheus, the fire-stealing titan
none on Earthnaturally exists only in dying stars
glows blueradiation makes it eerily luminescent
found latediscovered in 1945 nuclear reactor byproducts