Einstein’s gravity principle still correct, finds most precise test

An experiment conducted on a satellite in orbit found that Albert Einstein’s ideas about gravity are still correct, with measurements accurate to one part in a quadrillion

By Karmela Padavic-Callaghan

MICROSCOPE tested the weak equivalence principle over two years

CNES

The most precise test yet of one of Albert Einstein’s ideas about gravity has once again shown he was right. The finding means that physicists may need experiments that are even more accurate to figure out where his general theory of relativity breaks down and potential new forces and phenomena kick in.

For decades, physicists have looked for violations in general relativity in the hope of shedding light on phenomena missing from Einstein’s theory, like dark matter, and leading to a theory …