China's new mission DAMPE will launch a dark matter particle telescope to detect and study the evidence of dark matter. How does this telescope work? What is expected from the mission?
The idea behind DAMPE is that, if there is something we currently think of as dark matter (and AFAIK that's a big "if", but that's only an opinion...), every now and then a so-called WIMP or Weakly Interacting Massive Particle must hit a "normal matter" particle, producing one or a few high-energy photons. In order to maximize the chances of catching a WIMP, you need to go outside the Earth's atmosphere, which is what DAMPE does. It is a fairly simple scintillation detector, combined with a calorimeter (to detect the heat, in "normal matter", generated in the interaction's entropy increase) and a neutron detector, for the case a WIMP blasts one or more neutrons out of an atomic nucleus.