"If you look at the equation that Einstein gave us, it shows you can bend and warp space so you can travel at any speed you like in the universe," Lewis said.

"It's theoretically possible, but can we ever build a warp drive? We have hints that the kind of materials that we would need exist in the universe, but whether or not we could get them together and build a warp drive, we still don't know," Lewis added.
"The big problem we have, the speed of light, while fast - 300,000 kilometres per second - the distances involved are immense, so even travelling at the speed of light, it would take four years to go to the nearest star and 2 million years to go to the nearest large galaxy," he said.
In order to build a warp drive, scientists need to find a material that has a 'negative density energy'. "Empty space itself has a negative energy density. The big question is if we could mine it and shape it, we would basically have a warp drive there and then, but we just don't
know if that's possible," he added.
Lewis admitted the concept was theoretical, he said, "I think in the next 100 or 1,000 years we will reveal a lot more about the universe and maybe this hyper-fast travel will be realisable".

NASA physicist Dr Harold White is already working on a faster-than-light ship at NASA's Johnson Space Center.


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