The conclusion is the result of classical thinking using the ideas of general relativity but physicists have long wondered what would happen if you threw quantum mechanics into the mix? Now Finazzi and pals have worked it. He showed that this shrinking and stretching could enable the bubble–and the spaceship it contained–to move at superluminal speeds. His thinking is that while relativity prevents faster-than-light travel relative to the fabric of space time, it places no restriction on the speed at which regions of spacetime may move relative to each other.Īlcubierre imagined a small volume of flat spacetime in which a spacecraft might sit, surrounded by a highly distorted bubble of spacetime which shrinks in the direction of travel, bringing your destination nearer, and stretches behind you. But scientists kept them at arms length until 1994 when the idea was put on a firm (ish) theoretical footing by the Mexican physicist, Michael Alcubierre.
Warp drives have been the focus of science fiction writers for decades. “Warp drives would become rapidly unstable once superluminal speeds are reached,” say Stefano Finazzi at the International School for Advanced Studies in Trieste, Italy, and a couple of friends. That’s the conclusion of a new study into how warp drives would behave when quantum mechanics is taken into account. But it gives more ammunition to those who doubt its existence.īad news I’m afraid - it looks as if faster-than-light travel isn’t possible after all. While others suggest even more exotic explanations, such as the gravitational pull from other dimensions.Ĭlearly, the study here doesn’t disprove the exist of Dark Matter.
We wonder if Dark Matter isn’t here is it possible that it isn’t anywhere?Īlthough Dark Matter remains a popular explanation of observable gravitational anomalies, some critics argue this may simply come from our incomplete understanding of gravity. The recent study has found that the ‘positrons’ fueling the radiation are not produced from dark matter but from an entirely different, and much less mysterious, source: massive stars explode and leave behind radioactive elements that decay into lighter particles, including positrons, the antimatter counterparts of electrons. Some thought they’d found evidence of its existence in mysterious peaks of radiation emanating from the center of our galaxy.īut now Science Daily is reporting on a study which disproves that theory: Dark Matter is a mysterious, unobservable form of matter that some scientists believe fills our universe.
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