EARTH FACTS INTERESTING PLANET EARTH SPACE PLANETS MERCURY VENUS 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 THE THIRD PLANET LARGEST THE EARTH THE ONLY OUR SOLAR SYSTEM GREEK ROMAN BILLION YEARS SUPPORT PROFILE POLAR ORBIT ORBIT PERIOD DAYS SURFACE TEMPERATURE C SIZE DISTANCE ORBITAL ECCENTRICITY ROTATION DECELERATION HAPPENING ALMOST MILLISECONDS HUNDRED RATE THE EFFECT OUR DAYS IT HAPPENS AS 140 MILLION YEARS LENGTH OF A DAY ONCE BELIEVED THE CENTRE MOVEMENTS RELATION ANCIENT SCIENTISTS WHILST CELESTIAL BODIES CIRCULAR ORBITS EVENTUALLY THE VIEW THE UNIVERSE POSTULATED POWERFUL MAGNETIC PHENOMENON CAUSED CORE COUPLED WITH RAPID FIELD NATURAL SATELLITE THE PLANET EARTH PERCENTAGE THE BODY SATELLITE REAL TERMS FIFTH NATURAL THE OTHER SEVEN PLANETS GODS ANCIENT TIMES VISIBLE NAKED THE ROMAN METHOD NAMING RETAINED THE DISCOVERY OF DENSEST PLANET THE SOLAR SYSTEM DENSER AVERAGE DENSITY GRAMS CUBIC CENTIMETRE CLICK TO SHARE TWITTER FACEBOOK PINTEREST REDDIT SIMILAR MOON TRITON MOON LARGEST MOON THE OPPOSITE DIRECTION SEEN EXCEPT FOR EVERY COMMENT LEO SURFACE WATER HUMAN EYES THE FIRST TIME THE BLUE PLANET OUR PLANET SOLID GROUND RISING ABOVE OXYGEN SILICON IF YOU IRON ACTUALLY DOWN AT THE CORE GET DOWN SAMPLE CRUST 24 HOURS ROTATE AXIS 23 HOURS MINUTES AMOUNT TAKES ASTRONOMERS CALL SIDEREAL DAY WAIT MEANS SHORTER WE THINK THINK THAT TIME DAY BY DAY NIGHT 365 DAYS EXTRA CREATES THE NEED LEAP TACK DIVISIBLE BY 4 UNLESS DIVISIBLE SATELLITES PROBABLY YOU KNOW ORBITS CRUITHNE TOO MUCH DETAIL SURE HEARD ALL ABOUT IT SOMETIMES SECOND MOON ORBIT THE EARTH HOME PLANET LOOK LIKE IN ORBIT DISTINCT PATH AROUND THE SUN 60 METERS HORSESHOE ORBIT BRINGS CLOSE THE PLANET APPEAR CIRCLE MIGHT GOOD TARGET SPACE EXPLORATION ROUND IN FACT SIMPLY SHAPE BULGE THE EQUATOR SO WHAT CAUSES GEOID THE BULGE REST FROZEN ICE SHEETS LESS THAN FRESH WATER RIVERS CONTINENT TOTAL WINTER SEPTILLION TRILLION SNOW CRYSTALS DROP RANDOM BLACK HOLE GALILEAN MOONS JUNO SPACECRAFT ARRIVE OF STAR SCALE STAR STAR WARS THE PATH OBJECT NEW HORIZONS MISSION VERIFIED HORIZONS MISSION SPACECRAFT NEW HORIZONS SPACECRAFT TUMBLR BLOG GRAPHICS FREQUENTLY ASKED QUESTIONS POSTERS THE PLANETS PRIVACY CONTACT COOKIES CONTENT IMPROVE YOUR BROWSING