Planets

Mercury

Mercury is the closest planet to the sun and is only visible from earth 13 times in a century.

Mercury has no known moons to science but may have some.

Mercury has a circumference of 15,329km therefore has a diameter of 4,879km and a radius of 2,440km.

The orbit period of mercury is about 87.89 earth days.

Mercury is a dead meteor struck planet with a surface temprature of -173 to 427 degrees C.

Venus

Venus is the 2nd furthest planet from the sun and the 2nd brightest in our night sky after the moon.

Venus is the 2nd largest planet with terrestrial planet an sometimes reffered to as earths sister planet.

Venus has such a high level of air pressure if you set foot onnthe surface you would squash like a can of drink.

When it rains on venus it falls in the form of sulphuric acid.

It has a circumference of 38,025km therefore has a diameter of 12,104km and a radius of 6,052km.

Venus has no known moons an its orbit period of 224.70 earth days.

Earth

Earth is the 3rd planet from the sun and is the largest planet of the terrestrial planets.

Earth is the only planet not named after a roman god or goddess.

Earth has a diameter of 12,756km therefore has a circuference of 40,030km and a radius of 6,371.

Earth has one moon and an orbit period of 365.26 days

Earth has a surface temprature of-88 to 58degreesC.

Mars

Mars is the 4th planet from the sun named after the roman god of war.

Mars is a red dwarf nicknamed the red planet because of the rusted iron levels.

Mars has a diameter of 6,805km there fore has a circumferunce of 21,297km and a radius of 3,390km.

Mars has two moons phobos and deimos and orbit period of 686.98 (1.88 earth years.)

Mars surface temprature of -87 to -5 degreesC.

Jupiter

Jupiter is the 5th planet from the sun and is two and a half times the size of all of the other planets in the solar system (milkyway.)

Jupiter is a gas gas giant and has a diameter of 142,984km therefore has a circumference of 439,264km and a radius of 69,911km.

Jupiter has 67 moons the four main moons were spotted by Galileo Galilei; Io,Europa,Ganyemede and Callisto.

Jupiter has a orbit period of 4,332.82 earth days (11.86 earth years.)

Jupiter has a surface temprature of -108 degreesC and has four very faint non visible in the night sky rings.

Saturn

Saturn is the 6th planet from the sun and is most distant from earth that can be seen with the naked eye.

Saturn is most famous for its fabolous rings discovered in 1610 by Galileo Galilei.

Saturn can be seen with the naked eye as it is the fith brightest object in the milky way.

Saturn has a diameter of 120,536km therefore has a circumference of 365,882km and a radius of 58,232km.

Saturn has 62 moons and 30 rings in 7 groups and a surface temparature of -139 degreesC.

Saturn has a orbit period fo 10,755.70 earth days also said as 29.45 earth years.

Uranus

Uranus is the 7th planet from the sun and invisible from the naked eye.

As Uranus is tipped on its side it is often described as "rolling around the sun on its side."

Uranus has a diameter of 51,118 km therefore has a circumference of 159,354 km and a radius of 25362 km.

Uranus has a total of 27 moons and 13 rings.

Uranus has a surface temperature of -197 degrees C and a orbit period of 30,687.15 earth days (84.02 earth years.)

Neptune

Neptune is the eighth planet from the sun and may have also been much closer to it inthe

early years of the solar system and then migrated to its present position.

Neptune strange orbit path takes Neptune futher from the sun than Pluto.

Neptune has a diameter of 49,528 km therefore has a circumference of 155,600 km and a radius of 24,662 km.

Neptune has a surface temperature of -201 degrees C and an orbit period of 60,190.03 earth days (164.79 earth years.)

Neptune has 14 known moons and the most notable one is called Triton, Neptune also has five rings.

Pluto

Pluto is the ninth planet from the sun making it the furthest away from the sun.

Pluto is the only planet in the solar system to be a proper planet then declared a dwarf planet (in 2006.)

Pluto is so small it is actually smaller than the country of Russia.

Pluto has a diameter of 2,372 km therefore has a circumference of 7,232 km and a radius of 1,186 km.

Pluto has a surface temperature of -229 degrees C and an orbit period of 246.04 earth years also it has five known moons; Charon, Nix, Hydra, Kereberos and Styx.

Plutos name comes from the greek god of the underworld and if you lived there you would not ever have a birthday because its orbit period takes to long.

Plutos discovery date was on the 18th Febuary 1930 and was discovered by ClydeW.Tombaugh meaning Pluto has been around for 85 years and has been classified as a dwarf planet for 9 years.

Charon was discovered in 1978 Hydra and Nix both discovered in 2005 Kereberos discovered in 2011 and Styx discovered in 2012.