For example, no one has ever seen the atom with their own eyes; it was identified by secondary characteristics.
but we have accepted this information as truth without having any evidence.
We are told that Australia exists, shown pictures on TV, shown people who supposedly have been there — and we believe. But where is the guarantee that we are not being deceived, where is the evidence? Maybe Australia does not exist at all, and everyone who supposedly leaves for it ends up in another part of Eurasia or South America and becomes a slave in underground mines there.
No one has yet been scientifically able to refute a single statement from any section of the Vedas.
You wrote about a battle involving a million people. Nevertheless, archaeological excavations have not found a proper amount of weapons, equipment, cooking pots, latrines, let alone even the corpses and bones that should have remained after such a crowd. Check and mate!
Where do we end up when we save the world?