Sorry sorry, I mean this universe is also not eternal. It is
also infinite as being taught in Buddhism. I have never mentioned
that this universe is finite. Scientists have also proven it as
they have discovered many new planets. Only the enlightened ones
know the cause. There's no beginning and no ending if I understand
it correctly because everything is empty. No beginning and no
ending is not eternal.
Sorry but I still think you are confused.
If the universe is not eternal, then it means it is finite. It
means there was a time where it did not exist and later it did. The
discovery of planets (which are uninhabited) does not affect the
point I am making at all, that this universe has a beginning,
consisting of time, space, matter. And the very definition of
eternal means no beginning and no ending.