Physicists have been able to recognize the four fundamental forces of nature so far, namely gravity, a weak nuclear force. electromagnetism, and the strong nuclear force. Now, researchers have figured out the sign for a fifth force of nature that could help to shed light on the mystery of dark matter. Scientists from Hungary’s Institute for Nuclear Research have revealed the evidence of an unknown force that was involved in the radioactive decay of the beryllium-8 isotope. in 2016.  However, the study is still awaiting peer-review. But if it approved, a valid fifth force of nature could help scientists finally explore the dark matter.