The physicist, who died today, said he would only believe this when he met the first tourist from the future
“The laws of physics have conspired to prevent macroscopic objects from travelling through time.” (Stephen Hawking)
The craziest science fiction performance of all
Provided that Einstein’s theory of relativity is not disproved – for example by the research of Erik Verlinde – time travel does not violate any law of physics or quantum theory. At least that’s what the physicist Michio Kaku says in “the physics of the impossible“.
The theory of relativity, on the other hand, even implies the possibility of travelling in time
We do it every day anyway, and don’t notice it: travelling in time – in the realm of our cognitions. Einstein’s theory states that time passes more slowly for passengers the faster an object moves – for example, a cosmic racing car.
Everything would be different with a Cosmos race car!
With such a vehicle, which moves extremely fast through space, we could travel into the future. Provided that the vehicle takes us into space and we would make a time comparison with the people who stayed on earth.
There have been people who have travelled through time in this way
In the space station MIR the Russian astronaut Sergei Avdeyev sat and orbited the earth on incredible 748 days. Thus he was in the future for a total of 0.02 seconds. And our world down here has not vanished into thin air.
Journeys into the past
Kaku also believes it is theoretically possible to travel backwards through time. However, he admits that this is complicated. According to Einstein’s theory, space and time are intertwined. If there are wormholes that connect two points in space, points in time would also be connected. However, one would need huge amounts of negative energy to “unlock” it.
The consequences of time travel?
Suppose we traveled back in time and we would have an accident in which our mother died. As a result, we would not exist at all. She could not bear us.
On the other hand – if we did not exist, how could we have an accident? Probably we would create a new parallel universe with every backward time travel.
But don’t we do that when we remember something from the past?
Psychologists agree on one thing. Human memory is selective. It distorts what is actually happening. We remember extreme things and special features. We create parallel universes of experience with the power of our thoughts.
We will remember Stephen Hawking as one of the great physicists of our time. Across many parallel universes. To an anchor point of physics in the sea of memories. RIP!