Wormholes theoretically are shortcuts through space and time allowed by Einstein's theory of gravity and potentially permitting rapid travel across many light years' distances.
The concept was weakened, however, when some physicists concluded that wormholes connecting far apart distances in space would likely collapse before something traveling even as fast as the speed of light could pass through them. Now, a new study from Burkhard Kleihaus and Jutta Kunz of Germany's Universtat Oldenberg and Panagiota Kanti of Greece's University of Ioannina, reanalyzes the problem.
The new study employs string theory techniques used in the past to analyze black holes and reveals a range of wormhole diameter-to-energy ratios that appear stable. String theory ~ more properly "superstring theory" ~ broadly envisions subatomic particles as strings or loops of vibrating energy rather than point-like particles described in more standard physics theories.
Click here for the complete article.