CONSTELLATION MAJOR MINOR AUSTRALIS BOREALIS NIGHT SKY GUIDE THE NIGHT SKY HYDRA CONSTELLATION WATER LARGEST IN THE SKY LIES SOUTHERN HEMISPHERE STRETCHED SOUTH CANCER TAIL CENTAURUS THE GREEK ASTRONOMER PTOLEMY THE 2ND LERNAEAN HYDRA MYTH TWELVE LABOURS SOMETIMES TAKEN SNAKE THE MYTH THE CROW TRIED TRICK THE GOD APOLLO BLAMING THE SNAKE TARDINESS DEEP SKY OBJECTS HYDRA THE OPEN MESSIER GLOBULAR SOUTHERN PINWHEEL GALAXY THE HYDRA CLUSTER OF GALAXIES TOMBAUGH THE GHOST JUPITER SPIRAL GALAXY LOCATION THE 88 AREA SQUARE DEGREES IN THE NIGHT QUADRANT SEEN LATITUDES NEIGHBORING CONSTELLATIONS CANIS MINOR SEXTANS MESSIER 48 NGC 2548 MESSIER 68 NGC 4590 MESSIER 83 PINWHEEL GALAXY NGC 5236 STARS STAR ALPHA HYDRAE APPARENT MAGNITUDE METEOR SHOWERS ALPHA SIGMA BELONGS TO HERCULES FAMILY CORONA AUSTRALIS OPHIUCHUS TRIANGULUM VULPECULA THE GREEKS ADAPTATION BABYLONIAN CONSTELLATION BABYLONIAN CONSTELLATIONS SERPENT THE OTHER MYTHOLOGICAL HYBRID BIRD GREEK MYTHOLOGY GIANT CREATURE THE MONSTER TYPHON THE DRAGON GUARDED THE GARDEN THE HESPERIDES THE HERO NINE HEADS ONE OF THEM CELESTIAL THE IMMORTAL LIVED THE TOWN WHERE IT RAVAGED THE LAND SHOT FLAMING ARROWS LAIR SMOKED SMASHED TWO NEW GROW HERACLES DISTRACTED THE SWAMP ATTACKED CRAB SWORN ENEMY THE STARS ABLE CHARIOTEER IOLAUS HELPED BURNING STRUCK OFF EVENTUALLY CUT OFF BURIED LEAD CONSTELLATION HYDRA CROW BLAMED SENT FETCH THE CUP FIG TREE FINALLY WAS TO SAW LIE PUNISHED TURNED DRINKING MAJOR STARS ALPHARD HYDRAE APPARENT VISUAL MAGNITUDE LIGHT YEARS STELLAR CLASSIFICATION ORANGE GIANT BRIGHT GIANT SOLAR MASSES TIMES SOLAR RADIUS BELIEVED MILLION YEARS PROPER NAME DERIVED ARABIC MEANS SOLITARY DANISH ASTRONOMER TYCHO BRAHE THE STAR COR HYDRAE HEART ARABS GAMMA HYDRAE YELLOW LUMINOUS ZETA HYDRAE THE THIRD EVOLVED LUMINOSITY CLASS RADIUS BETA HYDRAE BINARY STAR THE SOLAR SYSTEM PERIOD PRIMARY COMPONENT THE SYSTEM BP STAR CLASSIFIED CANUM VENATICORUM TYPE VARIABLE CHEMICALLY CLASS B STRONG MAGNETIC FIELD 27 HYDRAE YELLOW GIANT STAR CLASS SUBSTELLAR COMPANION ORBITING PLANET CONFIRMED SIGMA HYDRAE TRADITIONAL NOSTRIL IMAGE SPITZER SPACE TELESCOPE SHOWS DYING STELLAR WIND PUSHED BOW SHAPE RIGHT GAS DUST BOW SHOCK PRIOR NEVER PARTICULAR RED GIANT STAR MOVES SPACE KILOMETERS PER SECOND AS IT EJECTA QUICKLY SOLID STATE INTERSTELLAR MEDIUM DUSTY NEBULA INVISIBLE NAKED EYE DETECTED INFRARED TELESCOPE THE DISTANCE BETWEEN THE SUN THE MASS THE BOW SHOCK THE MASS OF THE EARTH SPITZER INFRARED BRIGHTER COLORS GREATER INFRARED LIGHT THE LOCATION ITSELF DRAWN ONTO THE PICTURE IN THE BLACK REGION UETA VARIABLE STAR PULSATING VARIABLE STAGE CHANGES CARBON STAR REDDEST COLOUR INDEX RANGES TO 11 ONE OF THE FEW CARBON STARS BELONGING SPECTRAL CLASS LIGHT YEARS AWAY SHOWING VARIATIONS BRIGHTNESS RANGING EPSILON HYDRAE MULTIPLE STAR SYSTEM THE BINARY YELLOW WHITE DWARF ORBITAL PERIOD ARCSECONDS C SPECTROSCOPIC BINARY SPECTRAL TYPE PAIR SECONDS DAYS ORBITS GRAVITATIONALLY BOUND SYSTEM SHARES COMMON PROPER MOTION OF 10 NU HYDRAE THE BORDER CRATER CONSTELLATION SOLAR PI HYDRAE ORANGE STAR SUBGIANT VISUAL MAGNITUDE DELTA HYDRAE WHITE LINGUA TONGUE OPEN CLUSTER OPEN STAR CLUSTER THE CLUSTER DISCOVERED CHARLES MESSIER BINOCULARS GOOD HUBBLE HYDRA CLUSTER GALAXY CLUSTER 10 MILLION BRIGHT GALAXIES AWAY SEA SERPENT NEARBY BARRED SPIRAL GALAXY CLASSIC GRAND DESIGN MEMBER GALACTIC GROUP NGC 5253 DWARF GALAXIES SMALLER THAN MILKY SIMILAR THE MILKY WAY GALACTIC NUCLEUS DENSE SPHERICAL CONGLOMERATION THE CENTRE PRODUCER THE PAST INDICATIVE HIGH RATE OF STAR FORMATION CLASSIFICATION STARBURST GALAXY SYMMETRIC THE CENTRAL THE GALAXY HIGH LEVEL DOUBLE NUCLEUS STARBURST NATURE THE DOUBLE UNCERTAIN ORIGIN CORE GALAXY MERGED NUCLEAR RINGS YOUNG PROPORTION DARK SUPERCLUSTER THE CONSTELLATIONS BEARS THE PINWHEEL GALAXY URSA MAJOR CONSTELLATION SPIRALS SUPERNOVAE THE LAST FRENCH NICOLAS LOUIS DE LACAILLE THE CAPE OF GOOD HOPE PLANETARY NEBULA NGC 3242 BRUCE JASON ALEXANDER ARSEN NAVAL YERVANT UNIVERSITY MARIO PATRIZIO BRITISH WILLIAM HERSCHEL JOHN HERSCHEL 1830S GENERAL THE EYE AMATEUR NGC 3109 SPIRAL IRREGULAR GALAXY ANTLIA DWARF THE DWARF ELLIPTICAL GALAXY ANTLIA CONSTELLATION WARPED BY JOHN HERSCHEL ESOS VERY LARGE TELESCOPE TRULY REMARKABLE NGC 3621 BEGIN FLAT DISC PERMEATED LANES MATERIAL SPIRAL ARMS FORMING BLUE DOTS SPIRAL GALAXIES CENTRAL BULGE LARGE GROUP PACKED SPHEROIDAL CLEAR SIMPLY THE ONE NGC 6744 INTERESTING ACTIVE SUPERMASSIVE BLACK HOLE MATTER SOMEWHAT ACTIVE GALACTIC NUCLEI EXIST THOUGHT FEATURE SMALLER BLACK MASSES THOUSAND OBJECT BLACK HOLES TYPE THE LOCAL GROUP LARGE NUMBER PLANETARY NEBULAE AMOUNT GLOBULAR CLUSTERS ALMOST MILLION YEARS AGO THE AMERICAN CLYDE TOMBAUGH STATUS INTERMEDIATE SPIRAL GALAXY CHRISTIAN HEINRICH FRIEDRICH PETERS THE STRONG WARPING THE DISK RECENTLY COLLISION THE PROCESS SWALLOWING GRAVITATIONAL FORCES DISTORT STRUCTURES MERGE PROCESS TAKES MILLIONS OUTER REGIONS TWISTED DISK CLOUDS BLUE ASTRONOMERS BELIEVE THE FORMATION OF TRIGGERED COLLISIONS INTERSTELLAR CLOUDS SMAS