So now that scientists have discovered the elusive Higgs boson, what's left in physics? Don't worry, science geeks - there are a lot left for you to work on.
Natalie Wolchover of Life's Little Mysteries put forth the 9 Biggest Unsolved Mysteries in Physics. For example:
What is dark matter?
Evidently, about 84 percent of the matter in the universe does not absorb or emit light. "Dark matter," as it is called, cannot be seen directly, and it hasn't yet been detected by indirect means, either. Instead, dark matter's existence and properties are inferred from its gravitational effects on visible matter, radiation and the structure of the universe. This shadowy substance is thought to pervade the outskirts of galaxies, and may be composed of "weakly interacting massive particles," or WIMPs. Worldwide, there are several detectors on the lookout for WIMPs, but so far, not one has been found. [If Not Dark Matter, then What?]