Crossword clues for Astronomer's observation 3 lettersAnswerClueGSTAstronomical observation std.SKYAstronomer's observationMOONSETAstronomical observationNOVASAstronomical observancesSTARAstronomical observationHUBBLESLAWAstronomical observation that galaxies move away from Earth at a rate proportional to their distance from EarthMOONSETAstronomical observanceDEADRECKONCalculate without astronomical observationsCOMETAstronomer's observationSTARAstronomer's observationTYCHOBRAHEAstronomer who famously observed a supernova in 1572GALILEOAstronomer who first observed Saturn's rings