Dark matter is the physical mystery of our time. We know from many different results that a fair percentage of the Universe consists of matter that doesn't seem to interact in any way other than gravity. But with every statement like that, there is a limit: our measurements are only so sensitive, which leaves space for dark matter to interact. If it does, the interactions have to be weak. Hence, most physicists think that dark matter consists of weakly interacting massive particles (WIMPs). Not all candidate dark matter particles fit with experimental data, so they can be discarded, right? Maybe not, according to physicists at Harvard. "Wait," I hear you say, "data is king, so they can't be right." But they actually can, because when data gets turned into models, assumptions often get involved. The underlying reason for kicking dark matter proposals out is the assumption that the entirety of dark matter consists of a single type of particle (or, more accurately, many different types of particles with very similar properties). But who is to say that dark matter doesn't consist of a mix of different particles with vastly different properties? Read More at Ars Technica.
The auction has been closed.