Where’s the dark matter?

Dark mat­ter is not here, a new study has con­clud­ed. It might be somewhere else, but not in, or even anywhere near, our so­lar sys­tem. And that’s a big prob­lem, be­cause it should be all over the gal­axy. To make mat­ter worse, dark mat­ter is still sadly very much needed to plug oth­er gaps in as­tro­nom­i­cal theories.