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| A wormhole could be constructed in a way that allows one end to remain nearly motionless, while the other moves at almost the speed of light. This could theoretically allow humans to travel through time. An artist's impression is pictured |
- Physicist says harnessing negative mass/energy particles could make it possible
- They are possible within framework of General Relativity, but haven't been found
- Particles could allow for wormholes with one end 'at rest' and the other moving
- This could theoretically allow humans to jump back through time, expert says