THE ANDROMEDA GALAXY,ALSO KNOWN AS,MESSIER,SPIRAL GALAXY,KILOPARSECS,LIGHT YEAR,EARTH,MAJOR,GALAXY,THE MILKY WAY,THE GREAT,ANDROMEDA,NEBULA,OLDER,NAME,AREA,THE SKY,APPEARS,CONSTELLATION,PRINCESS,LIGHT YEARS,LARGEST,THE LOCAL GROUP,TRIANGULUM GALAXY,SMALLER,GALAXIES,FINDINGS,DARK MATTER,THE GROUPING,THE OBSERVATIONS,SPITZER SPACE TELESCOPE,REVEALED,ONE TRILLION,STARS,TWICE,NUMBER,BILLION,THE MASS,SOLAR MASS,SOLAR MASSES,COMPARISON,STUDY,EQUAL,BILLION YEARS,EVENTUALLY,MERGING,GIANT ELLIPTICAL GALAXY,DISC GALAXY,APPARENT MAGNITUDE,MESSIER OBJECT,VISIBLE,NAKED EYE,NIGHTS,VIEWED,AREAS,MODERATE,LIGHT POLLUTION,SIX TIMES,WIDE,FULL MOON,PHOTOGRAPHED,TELESCOPE,BRIGHTER,CENTRAL,REGION,BINOCULARS,SMALL TELESCOPE,APPEAR,SIMILAR,STAR,THE YEAR,THE PERSIAN,ASTRONOMER,ABD AL RAHMAN AL SUFI,BOOK OF FIXED STARS,NEBULOUS,SMEAR,STAR CHART,PERIOD,THE LITTLE,CLOUD,THE GERMAN,SIMON MARIUS,GAVE,DESCRIPTION,TELESCOPIC OBSERVATIONS,CHARLES MESSIER,OBJECT,MARIUS,DISCOVERER,THE ASTRONOMER,WILLIAM HERSCHEL,FAINT,REDDISH,THE CORE,BELIEVED,NEBULAE,THE COLOR,MAGNITUDE,GUESSED,NO MORE,TIMES,THE DISTANCE,SIRIUS,WILLIAM PARSONS EARL OF ROSSE,SAW,DRAWING,SPIRAL,STRUCTURE,WILLIAM HUGGINS,THE SPECTRUM,GASEOUS NEBULA,SPECTRA,DISPLAYS,CONTINUUM,SUPERIMPOSED,DARK,ABSORPTION LINES,HELP,CHEMICAL COMPOSITION,SPECTRUM,STELLAR,NATURE,SUPERNOVA,ANDROMEDAE,SEEN,SO FAR,TIME WAS,NEARBY,CAUSE,THOUGHT,LESS,LUMINOUS,EVENT,NOVA,ISAAC ROBERTS,PHOTOGRAPHS,OUR GALAXY,ROBERTS,ACTUALLY,SPIRAL NEBULAE,SOLAR SYSTEMS,VESTO SLIPHER,SPECTROSCOPY,MEASURE,RADIAL VELOCITY,WITH RESPECT TO,OUR SOLAR SYSTEM,VELOCITY,MEASURED,AMERICAN,HEBER CURTIS,SEARCHING,PHOTOGRAPHIC,RECORD,NOVAE,DISCOVERED,CURTIS,AVERAGE,ELSEWHERE,IN THE SKY,ABLE,TO COME,DISTANCE,ESTIMATE,ISLAND,UNIVERSES,HYPOTHESIS,INDEPENDENT,THE GREAT DEBATE,HARLOW SHAPLEY,THE DIMENSIONS,THE UNIVERSE,SUPPORT,CLAIM,IN FACT,EXTERNAL,APPEARANCE,LANES,DUST CLOUDS,HISTORICAL,OBSERVATIONS,DOPPLER SHIFT,ERNST,PRESENTED,METHOD,VELOCITIES,THE ANDROMEDA NEBULA,OUTSIDE,EDWIN HUBBLE,SETTLED,THE DEBATE,IDENTIFIED,EXTRA,GALACTIC,CEPHEID VARIABLE STAR,THE FIRST TIME,PHOTOS,HOOKER TELESCOPE,GREAT ANDROMEDA NEBULA,TO BE DETERMINED,MEASUREMENT,FEATURE,GAS,ROLE,AS IT,WALTER BAADE,FIRST PERSON,RESOLVE,THE CENTRAL,BAADE,DISTINCT,POPULATIONS,METALLICITY,NAMING,YOUNG,HIGH VELOCITY,THE DISK,TYPE,THE BULGE,TYPE II,NOMENCLATURE,SUBSEQUENTLY,THE EXISTENCE,JAN OORT,CEPHEID VARIABLES,DOUBLING,THE REMAINDER,RADIO EMISSION,DETECTED,HANBURY BROWN,CYRIL,HAZARD,JODRELL BANK OBSERVATORY,TRANSIT TELESCOPE,ANNOUNCED,RADIO ASTRONOMY,PIONEER,GROTE REBER,ORDER OF MAGNITUDE,HIGH,RADIO,MAPS,THE GALAXY,MADE IN,BY JOHN,BALDWIN,COLLABORATORS,CAMBRIDGE,GROUP,THE RADIO,ASTRONOMY,PLANET,THIS WAS,TECHNIQUE,CAUSED,DEFLECTION,LIGHT,MASSIVE,DIMMER,CEPHEID,MEASUREMENTS,STANDARD,GIANT,RED CLUMP,HIPPARCOS SATELLITE,USED TO,CALIBRATE,TEAM,ASTRONOMERS,REPORTING,COLLISION,PAPER,PUBLISHED,BIRTH,THE MERGER,LEADING,SMALLER THAN,THE ONE,TODAY,ABOVE,VIOLENT,METAL RICH,GALACTIC HALO,DISK,EPOCH,STAR FORMATION,TO THE POINT,BECOMING,LUMINOUS INFRARED GALAXY,MILLION YEARS,CLOSE,PASSAGE,OF STAR,FORMATION,GLOBULAR CLUSTERS,DISTURBED,OUTER,ACTIVITY,THE LAST,THE PAST,RECENTLY,INTERACTIONS,SATELLITE GALAXIES,ALREADY,STRUCTURES,STELLAR STREAM,MERGER,MILLION YEARS AGO,COUNTER,ROTATING,THE CENTER,PRESENCE,STELLAR POPULATION,TECHNIQUES,INFRARED,SURFACE BRIGHTNESS FLUCTUATION,LUMINOSITY,VALUE,FREEDMAN,CORRECTION,DERIVED,CEPHEID VARIABLE,REPORTED,CSIC,INSTITUTE FOR SPACE,CATALONIA,COLLEAGUES,THE DISCOVERY OF,ECLIPSING BINARY STAR,THE BINARY,DESIGNATED,BLUE STARS,ECLIPSES,THE STARS,TEMPERATURES,ABSOLUTE MAGNITUDE,VISUAL,ABSOLUTE,THE STAR,LIE,THE WHOLE,ANDROMEDA GALAXY,EXCELLENT,AGREEMENT,PREVIOUS,CLOSE ENOUGH,THE TIP,THE RED GIANT,BRANCH,TRGB,BE USED TO,AVERAGED,ESTIMATES,GIVE,DIAMETER,POINT,TRIGONOMETRY,ANGULAR DIAMETER,EQUIVALENT,ANGLE,HALO,TRILLION,SEEM,ALMOST,EVEN SO,SPHEROID,HIGHER,STELLAR DENSITY,STELLAR DISK,SIZE,TOTAL,STELLAR MASS,UP TO,BULGE,ADDITION,INTERSTELLAR MEDIUM,NEUTRAL HYDROGEN,MOLECULAR HYDROGEN,OF DUST,THE HELP,THE HUBBLE,SPACE TELESCOPE,UNCOVERED,HALF,ITSELF,AS OF,PREVIOUSLY,NEARLY,INVISIBLE,HOST,MILKY WAY GALAXY,SIMULATIONS,SAME TIME,ELEMENTS,HYDROGEN,HELIUM,SUPERNOVAE,PROPERTIES,LIES,THE GREEN,VALLEY,DIAGRAM,BELOW,ERUPT,EJECT,SPACE,LIFETIME,HEAVY ELEMENTS,BEYOND,COMMON,SEEMING,AGES,INCLINATION,INTERSTELLAR DUST,UNKNOWN,AMOUNT,BRIGHTNESS,AUTHORS,VALUES,RADIUS,MEGA,PARSEC,THE SOMBRERO GALAXY,ESTIMATION,DONE,SUGGESTS,THE BLUE,COLOR INDEX,TRANSLATES,ABSOLUTE VISUAL MAGNITUDE,WAVELENGTH,RATE,DOUBLE,ONCE,EXPERIENCED,PHASE,RELATIVE STATE,ACTIVE STAR,SHOULD,CONTINUE,OVERTAKE,RECENT,POPULATED,FORMING,THE RED,SEQUENCE,LACK,GREEN VALLEY,SLOWING,RUN OUT,FORMING GAS,SIMULATED,FROM NOW,ACCOUNTING,SHORT TERM,INCREASE,VISIBLE LIGHT,CLASSIFIED,CLASSIFICATION SYSTEM OF,SPIRAL GALAXIES,DATA,THE SURVEY,BARRED SPIRAL GALAXY,LONG AXIS,KECK TELESCOPES,SHOW,TENUOUS,MEANS,THREE TIMES,EVIDENCE,VAST,ACROSS THE GALAXY,TO THE EARTH,AN ANGLE,THE SIDE,ANALYSIS,THE CROSS,SHAPE,PRONOUNCED,RATHER,FLAT,POSSIBL