Physicists Roman Buniy and Stephen Hsu at the University of Oregon in Eugene, US, have been studying the properties of two theoretical wormhole types. The first type mainly obeys the laws of classical physics and does not fluctuate in time, while the second follows quantum mechanical rules and therefore carries with it inherent uncertainties. Researchers and science fiction writers have believed classical wormholes could serve as portals through the space-time continuum, but the work of Buniy and Hsu suggests that "the dark energy" responsible for wormholes would be too unstable to allow passage. Sorry Scotty.
Addendum:
