A large number of experiments have shown that superluminal motion is possible. However the scientific community is unable to react adequately because Einsteinians bombard it with idiotic and confusing explanations, often involving "group velocity" and "phase velocity". Experimentalists are forced to include such explanations in their articles - otherwise there would be no publication. Sometimes "group velocity" and "phase velocity" turn out to be insufficiently confusing and Einsteinians resort to the ultimate weapon - the preposterous "speed of information". This speed confuses and paralyses any critic or heretic:
Robert W. Boyd, Daniel J. Gauthier, Controlling the Velocity of Light Pulses: "So why do laboratory results of fast light not necessitate the superluminal transfer of information? It is believed that the explanation lies in the distinction between Vg [group velocity] and the information velocity. The group velocity can take on any value. However, the information velocity can never exceed c and, according to many models, is always equal to c."
http://science.sciencemag.org/content/326/5956/1074.full
LIGO fakers: "The fact that the speed of gravitational waves is equal to the speed of electromagnetic waves is simply because they both travel at the speed of information."
https://discovermagazine.com/the-sciences/why-does-gravity-travel-at-the-speed-of-light
If it were not for the confusing environment created by the Einstein Cult, superluminal motion would be regarded as commonplace. Just a few examples (note preposterous explanations of why Divine Albert's Divine Theory survives):
Nature 406, 277-279 (20 July 2000): "...a light pulse propagating through the atomic vapour cell appears at the exit side so much earlier than if it had propagated the same distance in a vacuum that the peak of the pulse appears to leave the cell before entering it."
http://www.nature.com/nature/journal/v406/n6793/full/406277a0.html
"The speed at which light travels through a vacuum, about 186,000 miles per second, is enshrined in physics lore as a universal speed limit. Nothing can travel faster than that speed, according to freshman textbooks and conversation at sophisticated wine bars; if anything could, Einstein's theory of relativity would crumble, and theoretical physics would fall into disarray. Two new experiments have demonstrated how flexible or misleading that comfortable wisdom can be in the right circumstances. Using a combination of atomic and electromagnetic effects, researchers have produced light beams in the laboratory that appear to travel much faster than the normal speed of light. Einstein's theory survives, physicists say, but the results of the experiments, they agree, are mind-bending. In the most striking of the new experiments a pulse of light that passes through a transparent chamber filled with specially prepared cesium gas appears to be pushed to speeds of 300 times the normal speed of light. That is so fast that, under these peculiar circumstances, the main part of the pulse exits the chamber even before it enters...But Einstein's theory, and at least a shred of common sense, seem to survive, the physicists explain, because the effect could never be used to signal back in time to change the past and, in the example, avert the accident."
https://www.nytimes.com/2000/05/30/science/faster-than-light-maybe-but-not-back-to-the-future.html
"Light hits near infinite speed in silver-coated glass. A nano-sized bar of glass encased in silver allows visible light to pass through at near infinite speed. The technique may spur advances in optical computing...In a vacuum the refractive index is 1, and the speed of light cannot break Einstein's universal limit of 300,000 kilometres per second. Normal materials have positive indexes, and they transmit at the speed of light in a vacuum divided by their refractive index. Ordinary glass, for instance, has an index of about 1.5, so light moves through it at about 200,000 kilometres per second. The new material contains a nano-scale structure that guides light waves through the metal-coated glass. It is the first with a refractive index below 0.1, which means that light passes through it at almost infinite speed, says Albert Polman at the FOM Institute AMOLF in Amsterdam, the Netherlands. But the speed of light has not, technically, been broken. The wave is moving quickly, but its "group velocity" the speed at which information is travelling is near zero."
http://www.newscientist.com/article...ear-infinite-speed-in-silvercoated-glass.html
"Speed of light broken with basic lab kit. Electric signals can be transmitted at least four times faster than the speed of light using only basic equipment that would be found in virtually any college science department. Scientists have sent light signals at faster-than-light speeds over the distances of a few metres for the last two decades - but only with the aid of complicated, expensive equipment. Now physicists at Middle Tennessee State University have broken that speed limit over distances of nearly 120 metres, using off-the-shelf equipment costing just $500...While the peak moves faster than light speed, the total energy of the pulse does not. This means Einstein's relativity is preserved, so do not expect super-fast starships or time machines anytime soon."
https://www.newscientist.com/article/dn2796-speed-of-light-broken-with-basic-lab-kit/
"Researchers at the University of Ottawa observed that twisted light in a vacuum travels slower than the universal physical constant established as the speed of light by Einstein's theory of relativity...In The Optical Society's journal for high impact research, Optica, the researchers report that twisted light pulses in a vacuum travel up to 0.1 percent slower than the speed of light, which is 299,792,458 meters per second...If it's possible to slow the speed of light by altering its structure, it may also be possible to speed up light. The researchers are now planning to use FROG to measure other types of structured light that their calculations have predicted may travel around 1 femtosecond faster than the speed of light in a vacuum."
http://phys.org/news/2016-03-optical-slower.html
"Light Pulses That Travel Faster Than Light Created...The technique developed at NIST is called four-wave mixing, and it works by altering some parts of each individual light pulse. This makes the light move forward faster than it normally would when traveling through a vacuum...The physicists explain that the new research does not violate Albert Einstein's theory on general relativity - which states that the speed of light in a vacuum is the fastest achievable in the Universe. They say that a sort of loophole exists in this theory. By careful tuning of the light source and advanced calculations, it is possible to nudge portions of the light pulses so that they arrive at their destination ahead or behind the main pulse...With four-wave mixing, the NIST investigators produced laser pulses that arrived at their destination a full 50 nanoseconds faster than photons traveling through a vacuum."
http://news.softpedia.com/news/Light-Pulses-That-Travel-Faster-than-Light-Created-267499.shtml
"Light that travels... faster than light!...This is exactly what the EPFL team has demonstrated. Using their Stimulated Brillouin Scattering (SBS) method, the group was able to slow a light signal down by a factor of 3.6, creating a sort of temporary "optical memory." They were also able to create extreme conditions in which the light signal travelled faster than 300 million meters a second. And even though this seems to violate all sorts of cherished physical assumptions, Einstein needn't move over - relativity isn't called into question, because only a portion of the signal is affected."
http://www.eurekalert.org/pub_releases/2005-08/epfd-ltt081905.php
"Recent experiments show that particles should be able to go faster than light"
https://quantamagazine.org/quantum-tunnel-shows-particles-can-break-the-speed-of-light-20201020/
"Nimtz and others argue that an analysis of signal shape and frequency spectrum has evidenced that a superluminal signal velocity has been measured and that tunneling is the one and only observed violation of special relativity. However - in contradiction to their opponents - they explicitly point out that this does not lead to a violation of primitive causality."
https://en.wikipedia.org/wiki/Günter_Nimtz