As far as we know, at the most basic level, the universe is made up of fundamental particles and controlled by four fundamental forces. The Standard Model explains these fundamental particles and ...

Some physicists believe that a fifth fundamental force could be the cause of some observational anomalies. A study is investigating ways to closely examine the trajectories of well-documented ...

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A test to measure a leading candidate for dark energy, a fifth fundamental force called the chameleon force, has found no evidence that it is real. The researchers behind the test say this rules out ...