Auroral studies ALIS has a great potential to be a cutting-edge cornerstone in observational studies of auroral physics. These include studies for which ALIS is used together with additional ground-based or airborne instruments, and studies for which ALIS is used alone. Together with satellite observations, ALIS observations can give valuable information concerning the spatial and temporal morphology of the aurora. This has, of course, promising implications for both magnetospheric and ionospheric studies. Several open questions remain in the field of magnetospheric physics, such what is the generation mechanism of pulsating aurora, auroral arc formation and development, substorm dynamics. Here ALIS could give excellent contributions with e.g. the recently proposed ``magnetosphere-ionosphere observatory'' - a mission for which four satellites in quasi-geostationary orbits give continuous conjunctions with one region in the auroral oval. For ionospheric work ALIS observations in conjunction with satellite and other ground-based observations, such as those from the EISCAT UHF radar, dynasondes, and Fabry-Perot Interferometers (FPI) are ideal for testing and developing the next step in ionospheric-aeronomy modelling -- time dependent three-dimensional modelling including chemistry, neutral winds, ionospheric convection, electron and proton precipitation. All necessary information is available: three-dimensional distribution of selected emissions (ALIS), neutral winds (FPI), ionospheric convection and electron concentrations (dynasondes and EISCAT), electron and ion temperatures (EISCAT) and theoretical models. It is not just a matter of putting the pieces together, but it is the next step.