In August 2014, the fifth and sixth satellites of the global Galileo global navigation system were launched into space. Although an elliptical trajectory of satellites, which is not circular as it should be, should have made them useless for navigation systems, they allowed a very rare physics experiment.

One was the Pacôme Delva from the Paris Observatory in France and the University of Bremen in Germany. Two independent research teams led by Sven Herrmann followed orientated satellites to search for holes in Einstein’s general theory of relativity.

Eric Poisson, a physicist from the University of Guelph in Ontario, who did not participate in the study, said: So far, many experiments have supported this, “he says. However, physicists could not combine general relativity with the laws of quantum mechanics that explain the behavior of energy and matter on very small scales. "This is one of the indicators that gravity is not actually what Einstein said it is. It’s probably a very good approach, but there’s a continuation of the story.”

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Einstein’s theory says that time will slow down as the object gets older. So a clock on the Earth will be slower than an hour placed in orbit of Earth. This time expansion is known as gravitational redshift. From this pattern, any deviation from the pattern may give clues to physicists for a new theory combining gravity and quantum physics. Delva and Hermann’s teams watched for three years how the shifts in gravity changed the frequency of super atomic clocks in satellites. In a previous gravitational redshift test conducted in 1976, when the Gravity Probe-A suborbital rocket was launched into the air with an atomic clock in the aircraft, researchers observed that general relativity predicts the frequency shift of the clock with an uncertainty of 1.4 × 10 ^ -4.
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New studies published in the Physical Review Letters magazine last December confirmed Einstein’s prediction and increased the accuracy by 5.6 times. So the theory of relativity – at least for the moment – is still valid.

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The Deviation in the Satellite Satisfied the Theory of Relativity

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The Deviation in the Satellite Satisfied the Theory of Relativity