FASTEN your seatbelts and hold on tight – intergalactic space travel is back on the agenda. Sceptics who dismiss the idea of faster-than-light travel through “wormholes” in space may have to think again, because new calculations based on Einstein’s general theory of relativity suggest that wormholes large and stable enough to allow intergalactic travel really can exist.
The possibility that the cosmos is peppered with short cuts through space and time has intrigued people ever since 1915 when German theorist Ludwig Flamm found hints of their existence in Einstein’s equations. While attempts to unify the fundamental forces of nature suggest that…
