577 astronomy astrophysics atmosphere bigbangtheory cells chemistry congresses cosmicdust cosmochimie cosmology evolution exobiology formation galacticdynamics galaxies geochemistry ice interstellarmatter interstellarmolecules isotopes life lifeonotherplanets manuelsd'enseignementsupérieur materials molecularastrophysics molecularevolution molecules nucleosynthesis origin oxygen photochemistry physicalandtheoretical physics planetaryscience planetology propellants protoplanetarydisks qb450 qb641 research solarsystem solids spacebiology spaceflight spacevehicles stars textbooks tl953l254c1972