The march or progression of science is totally reliant on human brain power and the tools it utilises.
Given that every part of our anatomy has limits, it must also be true of our brains ( unless you believe in other influence ).
It must stand therefore that scientific study / understsnding will have a limit, although how that will become apparent is anyones guess.
Perhaps we are pushing the boundaries already as there seems ti be more questuons than answers in certain fields eg origin of all understandable matter inc' life.
Theories abound.
All strengh to those who continue with curious enthusiasm to dedicate their lives to find answers as the hunger for knowledge and discovery has benefited mankind greatly.
Caution and discernment re what may harm us must also be prioritised to protect us also.