research 605 research of universe 162 science 81 cosmonautics 65 astronomy 62 applied research 53 history 52 more ... cosmic probes 43 development 39 scientific institutions 38 image processing 38 nuclear physics 37 methodology of science 35 sociological research 26 research projects 26 engineering 24 nuclear engineering 23 space ships 23 simulation and modelling 23 statistical methods 23 Mars 22 empirical research 22 scholarly communication 22 research techniques 21 innovation 20 comparative research 19 osobnosti 18 extra-terrestrial observation equipments 17 evaluation 16 gamma rays 16 less ...