Theory says yes; practicality says no. Thanks to Einstein time travel is possible. The easiest way is travelling very close to the speed of light. Achieve 99.5% close to light speed means that in 5 years you travel 50 years. Goodbye friends and family you left behind. The harder way is creating a wormhole, a device that can bend space and time, looping it on itself to go into the future or past. The energy required would rival the energy of the stars. Sorry Sci-Fi fans.

Guardians of the Lost Web
Digital archives safeguard our shared heritage, but in an era of cyber threats and fleeting information, who will protect these modern Libraries of Alexandria? THINK speaks to Dr Charlie Abela and Luke Brincat.
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