research 588 research of universe 159 science 76 cosmonautics 63 astronomy 62 applied research 53 history 50 more ... cosmic probes 43 development 39 image processing 38 scientific institutions 37 nuclear physics 35 methodology of science 35 sociological research 26 research projects 26 engineering 24 nuclear engineering 23 space ships 23 simulation and modelling 23 Mars 22 empirical research 22 research techniques 22 statistical methods 21 scholarly communication 21 innovation 20 comparative research 19 osobnosti 18 extra-terrestrial observation equipments 17 evaluation 16 gamma rays 16 less ...