science dont work on finding out the absolute truth, since absolute truth will require absolute evidence, no one can claim that their experiment and finding are the absolute evidence.

even gravity are not absolute truth, there is possibility that tomorrow there will be no more gravity, but the possibility is so small it is not worth considering it, infact with so much evidence for gravity you could bet you life on that gravity will still be there tomorrow. no having to believe in the absolute truth is a strength for science since every thing can be disproven when new evidence come out against the establish theory. there is not dogmatic believe to uphold.