Related by context. Frequent words. (Click for all words.) 63 soundwaves 62 solar corona 62 ultraviolet wavelengths 61 pulsations 61 magnetars 60 Solar flares 60 photosphere 59 radial velocity 59 aurorae 59 substorm 58 X ray emission 58 atmospheric turbulence 58 protoplanetary disk 58 magnetic fields 58 gravitational lens 58 microwave radiation 58 exosphere 58 diffraction pattern 58 oscillations 57 plasmon 57 elemental composition 57 Earth magnetosphere 57 Gamma ray bursts 57 surface plasmons 57 planetary nebulae 57 Gamma rays 57 WASP #b 57 protostars 57 photometry 57 supernova explosion 57 ionospheric 56 auroral 56 supernova remnants 56 magnetar 56 icy moons 56 photoluminescence 56 shorter wavelengths 56 active galactic nuclei 56 geomagnetic storms 56 orbiting planets 56 supernova explosions 56 astrophysical 56 substorms 56 Cosmic rays 56 Cosmologists 55 interplanetary spacecraft 55 Galileo spacecraft 55 Supernovae 55 meteorite impacts 55 polar vortex 55 excitations 55 metallicity 55 ionosphere 55 moon Enceladus 55 Type Ia supernovae 55 gravitational wave 55 interferometry 54 photometer 54 interferometric 54 noctilucent clouds 54 amplitudes 54 Cepheids 54 solar flares 54 phonon 54 visible wavelengths 54 Astrophysicists 54 VIRTIS 54 magnetosphere 54 gravitational waves 54 infrared wavelength 54 solar irradiance 54 astronomical objects 54 infrared spectroscopy 53 cosmic ray 53 interstellar dust 53 ESO Very Large Telescope 53 cosmic rays 53 novae 53 cosmic particles 53 spectrographs 53 numerical simulations 53 nanobubbles 53 spectra 53 ejecta 53 solar nebula 53 CMEs 53 tropospheric 53 Ultraviolet radiation 53 radioactive decay 53 particle detectors 53 aerosol particles 53 gravitational lensing 53 antiprotons 53 ionisation 53 meteoroids 53 XMM Newton 53 oscillatory 53 interferometers 53 nanomechanical 53 ionize 53 optical wavelengths