PLANETS MERCURY VENUS EARTH MARS JUPITER SATURN URANUS NEPTUNE GAS GIANTS TERRESTRIAL PLANETS SOLAR SYSTEM THE SUN THE MOON ASTEROID BELT KUIPER BELT OORT CLOUD SOLAR ECLIPSES COMETS ASTEROIDS METEORITES METEOR SHOWERS GALAXIES MILKY WAY ANDROMEDA SOMBRERO TRIANGULUM MAGELLANIC CLOUDS PINWHEEL MESSIER 87 ANTENNAE BLACK HOLES MOONS PHOBOS DEIMOS EUROPA GANYMEDE CALLISTO TITAN TRITON CHARON DWARF PLANETS CERES PLUTO HAUMEA MAKEMAKE ERIS FACTS SECOND PLANET OBJECT IN THE NIGHT THE ROMAN GODDESS OF LOVE LARGEST TERRESTRIAL PLANET SOMETIMES SISTER PLANET SIMILAR SIZE THE SURFACE THE PLANET OPAQUE LAYER CLOUDS MADE UP SULPHURIC ACID PLANET PROFILE ORBIT ORBIT PERIOD DAYS SURFACE TEMPERATURE C ASTRONOMERS DISTANCE ORBITAL ECCENTRICITY QUICK NEARLY THE EARTH DIAMETER THOUGHT CENTRAL IRON ROCKY MANTLE SILICATE APPEAR EARTH DAYS TAKES TEMPERATURE REACH LASTS LONGER ROTATE ONCE AXIS THE PLANETS AROUND THE SUN THE OPPOSITE DIRECTION OTHER PLANETS MEANS ROTATING RETROGRADE ROTATION POSSIBLE REASON MIGHT BE COLLISION THE PAST ASTEROID CAUSED ALTER OUR SOLAR SYSTEM NATURAL MAGNITUDE BRIGHT SEEN DAYTIME CLEAR ATMOSPHERIC PRESSURE TIMES GREATER THAN CRUSHED ENTERING MEANING LIE THE PRESSURE FELT HUMAN EQUIVALENT EXPERIENCED DEEP BENEATH THE SEA DIFFERENCE EARTHS MASS ALSO KNOWN AS THE MORNING STAR THE EVENING STAR CIVILISATIONS PHOSPHORUS HESPERUS VESPER EARTHS ORBIT IT CHANGES VISIBLE SUNSET BEFORE SUNRISE MAYAN ASTRONOMERS OBSERVATIONS HOTTEST AVERAGE SURFACE TEMPERATURE TILT SEASONAL VARIATION DENSE ATMOSPHERE PERCENT CARBON DIOXIDE TRAPS HEAT CAUSES GREENHOUSE EFFECT STUDY VENUS EXPRESS SPACE SHUTTLE SENT THE EUROPEAN SPACE AGENCY INFORMATION PLANNED LAST FIVE HUNDRED THE MISSION VOLCANOES VOLCANIC 20 KM RUSSIANS MISSION VENERA 1 SPACE PROBE LAUNCHED CONTACT THE USA PROBE MARINER MARINER 2 ABLE MEASUREMENTS THE SOVIET VENERA 3 THE FIRST MAN CRAFT ONE POINT TROPICAL MAKE IT IMPOSSIBLE VIEW SURFACE OUTSIDE RADIO DEVELOPED 1960S SCIENTISTS OBSERVE MEASURE THE EXTREME TEMPERATURES HOSTILE ENVIRONMENT OCEANS EVAPORATED SHARE TWITTER FACEBOOK PINTEREST REDDIT ORBITAL PERIODS HOW LONG DEFINED COMPLETE VENUS TRANSIT CROSSED FACE MARKING THE LAST UNTIL DECEMBER MOON BLACK HOLE GALILEAN MOONS JUNO SPACECRAFT ARRIVE OF STAR SCALE STAR STAR WARS ORBITS THE PATH SPACE NEW HORIZONS MISSION VERIFIED HORIZONS SPACECRAFT HORIZONS SPACECRAFT TUMBLR BLOG GRAPHICS FREQUENTLY ASKED QUESTIONS POSTERS PRIVACY COOKIES CONTENT IMPROVE YOUR BROWSING