edwin hubble, telescope, planck, fred hoyle, astronomer, kepler, deimos, tycho brahe, harlow shapley, quasar, optical telescope, cassini, edmond halley, aristarchus, comet, edmund halley, exoplanet, refracting telescope, epsilon aurigae, isaac newton, extragalactic, milky way galaxy, andromeda galaxy, puppis, hipparchus, radial velocity, spectroscopic, percival lowell, cosmic microwave background, relativity theory, proxima centauri, spiral galaxy, betelgeuse, earthshine, nebula, astrophysical, bootes, trifid, jodrell, supernova, omega centauri, galaxies, coronagraph, large magellanic cloud, heinrich hertz, canes venatici, george gamow, epimetheus, horsehead nebula, astronomical telescope, wernher von braun, planetary nebula, phaethon, radiometer, photometer, monoceros, observatory, johannes kepler, eridanus, uranus, dione, huygens, ursa minor, astrometry, sciamachy, mimas, corot, jovian, zodiacal light, lise meitner, cassiopeia, polarimetry, canis minor, carl friedrich gauss, virts, planets, celestial sphere, mossbauer, spectrometer, maser, scorpius, fomalhaut, canis major, harold urey, robert peary, asteroid, christiaan huygens, eclipsing binary, cepheus, harold kroto, infrared, boson, saturnian, irving langmuir, bolometer, astronomy, planetoid, camelopardalis, tradescant, niepce, flyby, pleiades, franklin, burke, goethe, holmes, newman, prescott, arnold, augustine, authoress, bard, carey, darwin, emerson, fleming, graham, hutchinson, jefferson, lewis, wesley, william

john herschel, sir john frederick william herschel, sir john herschel