Is it possible to see past moments if they are "gone"

Thank you.

But do you think it’s still possible to directly perceive past mind-moments ? Some say it can’t, because past moments are gone for good. But if that’s the case, then how did the Buddha go about seeing his past lives? And from memory, he explained that this vision of past lives simply stems from the 4 rupajhana (all we have to do is direct our consciousness towards past lives), so it seems that anyone can see them?