Comment by ButlerianJihad

https://en.wiktionary.org/wiki/melanoheliophobia

Okay, so this appears to be a neologism that may not be found outside of science fiction dialogue. But I can appreciate the humorous derivation here.

Wiktionary defines this as an "irrational fear" which is in-line with other irrational fears known as phobia. So, is it possible to have a rational or healthy fear of black holes? Is it rational to be unafraid of them?

I am unafraid of personally meeting the Flying Spaghetti Monster whilst not wearing a colander on my head, and I am not irrationally afraid that Azeroth will be invaded by Kardashians. I am not afraid that a dragon will bite my head off.

It seems rationally to be respectfully "fearful" of the capabilities and awesome astrophysical properties of black holes, but it would be irrational to be afraid that I could fall into one, or be personally harmed in any way by one. If someone begins "seeing" black holes at the end of their suburban cul-de-sac, then probably get some professional help.