https://www.vice.com/en_us/article/m7qqw3/scientists-are-searching-for-a-mysterious-force-to-explain-the-universes-anomalies

There are four forces that are canon in our universe: gravity, electromagnetism, and the strong and weak nuclear forces. But scientists are searching for evidence of a new, unknown force that could explain some of the wildest mysteries facing humanity.

The effects of the four known forces on matter, from the tiny realm of atoms all the way up to the colossal scale of galaxies, are well documented and mostly understood. But when you consider that about 95 percent of our universe’s mass is made up of shadowy unexplained stuff known as dark matter and dark energy, it’s no wonder that scientists have long suspected that those four forces do not represent the entire blueprint of the cosmos.