Albert Einstein's said a train approaching the speed of light will
contract. This is wrong. From what end of the train does the
contraction start?

The form of the universe is an hypersphere. This is Einstein's closed
universe finite yet unbounded. If space contracts that hypersphere
would become flat. It would create a pancake universe where one
dimension is disappearing. It simply is not possible for the motion of
an object to cause an outside dimension of the entire universe to
shrink.

Only the time metric contracts. Space does not shrink and distance
remains always the same.

Mitch Raemsch Twice Nobel Laurate 2008