“Giordano Bruno was burnt at the stake for his belief in the ‘plurality of worlds’ (aliens)”
I coudn’t say what, exactly, Bruno was burned for, except that it was “heresy”. He did, I gather, believe in an infinite number populated worlds. He was also a heliocentrist and a pantheist. So he could have been burned for any number of moral failings.
100% correct. They had plenty of reasons to execute Bruno. Not the least of which were his direct insults to the Pope.