Arden's singularities: it is, that I am like some one whom he liked and lost in early youth; and however the reduction is dreadful, the really like is yet nice to remember." An observer crossing the event horizon of the non-rotating and uncharged black hole (a Schwarzschild black hole) are https://letsbookmarkit.com/story18235464/new-step-by-step-map-for-singularity-black-hole