So even if scientists do not find the particles they are currently looking for, it will not automatically mean that dark matter does not exist.
"The only way to prove that dark matter does not exist is to show that all these data have been misinterpreted, for instance because the law of gravity we adopted - Albert Einstein's Theory of General Relativity - is wrong," Bertone said. "Despite much effort, no satisfactory theory of gravity exists today that can be reconciled with all observational data without assuming the existence of some forms of dark matter."
Einstein's general theory of relativity describes how objects warp space and time to create gravity.
But many scientists think that dark matter will end up showing its face, and soon.
"In my view, the single most promising class of dark matter experiments over the next decade are the underground detectors - LUX, XENON-1ton, LX, and others," said Dan Hooper, a physicist at Fermilab in Batavia, Ill.
The detectors "just keep getting more and more sensitive, and already rule out many otherwise attractive dark matter candidates. The LHC and gamma-ray telescopes are also very important players in the hunt for dark matter," he added.