Related by context. Frequent words. (Click for all words.) 52 Strelka 45 Biological Problems 45 Fei Junlong 44 Mars# 44 Hans Schlegel 43 Laika 43 pressurized compartment 41 Ken Bowersox 41 Cady Coleman 41 Budarin 40 Commander Gennady Padalka 40 Tom Marshburn 40 Nicolelis 40 interplanetary spacecraft 40 Gennady Padalka 39 Spacelab 39 Romanenko 39 agency Roskosmos 39 Eyharts 38 Oleg Kononenko 38 Krasnov 38 Ellison Onizuka 38 Drew Feustel 38 subatomic physics 38 Alexander Kaleri 37 aboard Soyuz rocket 37 Zhai Zhigang 37 Spacewalks 37 Dan Tani 37 Discovery undocked 37 guinea pig 37 agency Roscosmos 37 Greg Chamitoff 37 Ron Garan 37 Shenzhou VI 36 Chang'eI 36 astronaut Peggy Whitson 36 Chamitoff 36 cosmonaut 36 Andrei Tarkovsky 36 Sputnik satellite 36 Automated Transfer Vehicle 36 aboard Atlantis 36 roboticist 36 experiments 36 Padalka 36 Astronaut Nicole Stott 35 Combined Operational Load 35 Owen Garriott 35 cosmonaut Yuri Gagarin 35 Resourcesat 2 35 nanosatellite 35 ISS Expedition 35 Wakata 35 Plesetsk 35 experimental 34 microgravity environment 34 Shenzhou VII 34 filmmaker Werner Herzog 34 Japanese astronaut Koichi 34 Tim Kopra 34 optogenetics 34 Salyut 34 Karen Nyberg 34 Gregory Chamitoff 34 Baikonur Kazakhstan 34 taikonaut 34 Lunokhod 34 guinea pigs 34 Gagarin 34 experiment 34 vom Saal 34 Shenzhou V 34 SuitSat 34 spacesuit 34 Von Braun 34 Korolyov 33 embryologists 33 Genetic modification 33 Misha 33 Kavoshgar 33 gerbils 33 doctor Josef Mengele 33 NASA astronaut corps 33 spacewalks astronauts 33 lunar orbiter 33 fussy eater 33 Gagarin flight 33 robotic spacecraft 32 iCub 32 Suraev 32 Yang Liwei 32 Russian cosmonaut Valery Tokarev 32 macaque monkeys 32 taikonauts 32 microfluidic chip 32 shuttle Endeavor 32 rhesus macaque monkeys 32 approved implantable microchip 32 veterinary behaviorist 32 Microgravity