I started to wonder how on earth it's possible we can see it if the amount of photons is still the same right? Well before I decided to blurt my unproductive co

I started to wonder how on earth it's possible we can see it if the amount of photons is still the same right? Well before I decided to blurt my unproductive comment here on HN I researched this article on Quora https://www.quora.com/If-photons-have-no-mass-then-how-does-gravitational-lensing-occur https://www.quora.com/If-photons-have-no-mass-then-how-does-... which says that gravity increases the photons energy, frequency and speed(I thought they travel at the constant speed of light?) as they travel through space allowing those faint objects to be still visible here on near-Earth space. Yet if the amount of photons that travel is the same with a gravitional lense or not I'd argue that the information to see a lot of other distant and faint objects exists as well. We just need better instruments to detect them. And probably there is a threshold after which the photon's energy become so small that it regresses into a background noise. Well kinda obvious now that I wrote it down.