More than a year ago, scientists found the Higgs boson, and this morning, two physicists who 50 years ago theorized the existence of this particle got the Nobel, the highest prize in science.

For all the excitement the award has already generated, finding the Higgs — arguably the most important discovery in more than a generation — has left physicists without a clear roadmap of where to go next. While popular articles often describe how the Higgs might help theorists investigating the weird worlds of string theory, multiple universes, or supersymmetry, the truth is that evidence for these ideas is scant to nonexistent.

No one is sure which of these models, if any, will eventually describe reality. The Standard Model is supposed to account for all known particles and their interactions, but scientists know that it’s incomplete.

Higgs Boson Gets Nobel Prize, But Physicists Still Don’t Know What It Means By Adam Mann, Wired