Einstein’s general relativity just passed most rigorous test yet

Scientists have demonstrated that Einstein’s theory of general relativity is correct to a remarkable degree of accuracy, despite having been around for more than a century. 

The team behind the research wanted to test a component of Einstein’s theory of general relativity called the weak equivalence principle, which states that all objects, regardless of their mass or composition, should free-fall the same way in a particular gravitational field when interference from factors like air pressure is eliminated. To do so, the scientists measured the acceleration of free-falling objects in a French satellite called MICROSCOPE, which launched in 2016.

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