Long before The Empire Strikes Back (Star Wars: The Empire Strikes Back) before the United Federation of Planets (United Federation of Planets), Isaac Asimov created the Foundation (Foundation), epic story of the decline and fall of the Galactic Empire (Galactic Empire ). Asimov’s Empire encompassed 25 million planets, traveling between them is performed using elegant spacecraft that crossed the galaxy.
How do these spacecraft to travel huge distances between the stars? Moving through hyperspace, of course, as even Asimov Foundation explains:
“Driving through ordinary space at speeds that did not exceed the speed of light could continue … which would have meant that travel time to the nearest habitable stellar systems were of the order. Hyperspace, unimaginable region that was neither space nor time, neither matter nor energy nor something nor nothing could traverse the galaxy in a very short space of time. ”
What speaks Asimov here? He knew something about a secret way by which they could make travel at speeds higher than light? Hard to believe. Asimov was a science fiction writer who, when faced with a problem in his novels without solving, simply invent a solution for this.
You can not exceed the speed of light
Based on what we know now, it is impossible to move faster than light, which means that empires, federations, confederations galactic are virtually impossible. This is an inconvenience. To exceed the speed limit, however, cosmic, science fiction writers have invented “warp engines”, “hyperspace”, “subspace” and other tricks that were imprinted in the memory of readers.
Everyone knows the Starship Enterprise and the way that it can move through space:
The speed limit is the speed of light traveling in outer space
Why can not exceed the speed of light? Let us remember that people have talked about the “sound barrier” until it has been exceeded. However, it is much harder to overcome the barrier represented by the speed of light. In the nineteenth century scientists developed the theory of light that sparked bewilderment. Accordingly, any observer must be the same speed of light (299 792 458 m / s). This means that if you try to catch up a light beam, the beam will turn away from you at the speed of 299 792 458 m / s regardless of how fast you move. And what is even more bizarre is that even if you drive 99% of the speed of light, you will find that the light is dispersed with exactly the same speed of 299 792 458 m / s. Will reach the same conclusion and a friend of yours who sits still.
Many scientists of that time did not believe this prediction strange and American physicist Albert Michelson (along with his collaborator Edward Morley) conducted an experimental setup that tried to determine how to change the speed of light due to the movement of the Earth through space . Michelson-Morley experiment did not show any variation in the speed of light. That seemed to be the same, whether measured it in the same direction as the Earth or move in another direction.
Einstein and relativity
Albert Einstein developed a whole theory, called the theory of relativity, around the idea that the speed of light is the same for all observers that measure, no matter how fast they are moving against the light. Einstein’s theory predicted that space and time should stretch or shrink when someone is moving with increasing speed. Consequently, the relativity resulted in a stall for moving in space: the speed of light. It can not be exceeded.
Relativity is a cornerstone of modern physics and we have no reason to doubt it. No one has ever observed an object to move faster than light. It must here be noted that Einstein’s speed limit is actually the speed of light in vacuum. Light slows as it passes through water or glass, so it is perfectly possible to expand this low speed until the appropriate speed of light in vacuum. Any moves faster than light water or glass produce light equivalent of a sonic boom, the so-called Cerenkov radiation. Is giving them nuclear reactors glow blue.