# Does gravity bend light, and how much time does it take for light to cross gravity of a Black Hole?

This is very confusing to me, so the question might be same. Please go through it, if required i will add more text.

According to Einstein's theory of general relativity, photons are not technically affected by large gravitational fields; instead space and time become distorted around massive objects and the light simply follows this distorted curvature of space.

My questions are: 1) For example: 1 hour near a black hole, is equivalent to 100 Years on Earth. If the light travels through this distorted space and time around a black hole, how much earth time does it take for light to cross the black hole's gravity?

2) We say the Universe is 14 Billion Years old, and its diameter is 91 Billion Light Years approximatly. My assumption is, these age and diameter of universe is based on the measurement of the light travel (Light is one of the factor in many).

3) So, if first (1) and second (2) points are right, how can we say the Universe is created 14 Billion Years ago (if light takes 100 Earth Years to cross over the black hole's gravity)?

• Please take care of your spelling and punctuation in the future. Question marks, capitals, 'through' instead of 'thru', proper sentences. That will make it a lot more pleasant to read. I understand English may not be your first language, but punctuation is not a matter of what language you're used to. ;-) Dec 10, 2015 at 11:05
• Good one @user1991 I dont think this is a language related web site neither forum. Many great people has already answered the question, do you understood the question, if not ask me i will explain me. Please stop posting this kind of messages which doesn't questions Jul 24, 2019 at 4:00
• See, I don't understand this comment. What are you trying to tell me? "which doesn't questions" doesn't mean much to me. Like I said in my comment (4 years ago...) is that punctuation is important in asking a question. Furthermore, it seems I was the one to answer your question - so I think I was in a fair position to complain. Jul 24, 2019 at 8:08
• perfect, we will use spell checker and grammer checker next time, as AI is also increasing in demand now a days. Cheers. Jul 25, 2019 at 3:03

Crucially to your question I think, you must remember that photons do not experience time and their speed is equal to $c$, the speed of light. Photons are not unaffected by their movement through a gravitational field, mind you: but this shows up as a gravitational redshift (for a time-varying potential), rather than a time delay (other than the slightly elongated path, perhaps).