Watching Fall Into Black Hole

If we on Earth are now observing an object that we see as near a black hole and in free fall on a path that intersects the event horizon of that black hole, then what we are seeing will be extremely red shifted version of the object that is therefore both very dim and ageing very slowly. So the apparent (to us) progress of everything in the object’s frame (including its rate of fall) is very slow. As time (for us) progresses, we will see the object’s clocks and apparent rate of fall to get progressively slower as it also dims towards invisibility.

Source: (1001) Alan Cooper’s answer to An event horizon is a boundary beyond which events cannot affect an observer. What would we be witnessing if a spacecraft was to cross the event horizon of a black hole? The spacecraft disappearing, or eternally approaching the black hole? – Quora

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