hi sorry for the late reply i’m currently in a place where wifi struggles are real af but to answer your question, yes astrophobia is a legit fear (there are fears for everything i presume seeing as a fear for holes even exist) but generally being astrophobic means you’re afraid of thunder and lightning. this fear of mine started when i was just a little kid and while we were staying at like this farmhouse surrounded by fields, i saw a lightning struck at the ground outside of the house literally meters away from me, at first i didn’t what it was but the electric current scared me and until now, i’ve never gotten over that fear — and when i see lightning or hear thunder, i usually just stay out of the windows because i start having anxiety attacks — nothing major but yeah. i’m not sure if it is a common fear amongst other people but wow this is long hahahaha hope this satisfied your interest :)