Except for money. Money can time travel. Forward or back.
My physics doesn't go much beyond the sub-atomic particle stage. I haven't a good grasp on how FTL can be done.
Fortunately, star-travel does not depend on FTL, just patience and persistence, like most problems.
Have you ordered your Girl Scout cookies yet?
Some of the newer field theories in pursuit of a GUT are pretty interesting. Some of them are real brain twisters to work your way through, but a couple are starting to put together a rather intriguing picture of how things are.
If they adopt a self recycling universe model and just dump the Big Bang/Big Crunch nonsense, things oughta drop into place quickly.