UiT The Arctic University of Norway and Andøya Space have now completed the necessary preparations for an all-Norwegian research rocket named MaxiDusty-2. Among other things, the rocket will bring back dust and particles from the mesosphere, so that the researchers can study these carefully in their laboratories. In the period May-August, this area of altitude in the atmosphere is the coldest place on Earth with around 160 degrees below zero. In fact, it has to be that cold before the water that has bound to the dust particles freezes into ice and eventually forms large ice clouds, known as nocturnal clouds.