The problem with this train of thought is this, all teh things we can imagine or think of right now is governed by the rules of science and maths, and these rules only work in *this* universe, anything that's beyond our universe should be incomprehensible to the human mind (and science, too!).
Wormholes or time travel are of this universe i.e even if they make no sense to our minds they'd still make sense on paper (or mathematical calculations or even in bad science fictions).
Perhaps TS should limit* the research to 'beyond the earth' or beyond the solar system'?

* which still seem too adventurous IMO, we have barely scratched the surface of figuring the 'human' himself!

ref. (only scanned them -hurts my brain lor , but interesting nonetheless)
http://en.wikipedia.org/wiki/Wormhole
http://en.wikipedia.org/wiki/Time_travel

Let me demonstrate another (IMO) fallacy of your attempt of 'using [your] imagination', first this post of yours:

- in each of your proposed scenario the rules of physics and maths and science is still observed, e.g flying fish is just fish that use flight (uplift, drag, air pressure etc.) as a mean of transport, they'd still consume food, breathe and everything, it's just their environment that is different, they're still in the same universe.

- going beyond the boundaries of this universe -to my thinking, means finding the place where the rules don't apply anymore. Thus there should be no light or matter there, there's nothing to see because our sights wouldn't work, nothing to measure because our technology wouldn't work and, assuming that we *can* exist there we need to find another sets of laws to describe it.

Just to reiterate my point about science-based 'imaginations' here's a piece by National Geographic about:

Link

Yep that's the basis of every reasonable prediction a logical system can make, in the NG documentary example it's basically a similar system only the variables are extended to include climatology, biology, physics, chemistry etc.