Astrophysics Astronomy 312 SCIENCE 295 Astrophysique 261 Physics 215 astrophysics 136 Astronomy, Observations and Techniques 133 Astronomy-Observations 126 Cosmology 123 Solar system 102 Space Physics 102 Astronomy, Cosmology and Space Sciences 93 Gravitation 91 Space sciences 77 Cosmologie 71 Classical and Quantum Gravity 68 Astrofísica 67 Astronomie 67 Astronomía 63 Ciencias del espacio 57 Mathematical physics 51 Nuclear physics 47 Planetary science 47 Planetary Science 43 Particles (Nuclear physics) 42 Quantum field theory 41 Elementary Particles, Quantum Field Theory 38 Elementary particles (Physics) 38 Theoretical, Mathematical and Computational Physics 38 Particules (Physique nucléaire) 36