The usual approach to detecting dark matter is to search for particles with a specific range of masses. The hope is that even if we see nothing, we'll at least know more about what dark matter is not.
Physicists at Fermilab have now released the first data from a different type of detector, one that looks for dark matter over a much wider range at lower sensitivity.
Result: still no dark matter, but a larger swathe of parameter space ruled out.
