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Planets of the Solar System

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48 facts:

Earth
      
Has the Greatest Water to Land Ratio
97.4% consists of salt water
Earth
      
Has a Moon Larger Than Pluto
3475 km diameter to Pluto's 2300 km diameter. Saturn, Jupiter and Neptune also have moons larger than Pluto. Pluto is currently classed as a "dwarf planet".......we now have only 8 planets
Earth
      
Is 92.9 Million Miles from the Sun
It takes light approximately 8 minutes to reach earth from the sun
Earth
      
Is the Only Planet Known to Have Life
Although the exoplanet, Gliese 581 C, is thought to support liquid water and to harbor life
Jupiter
      
Contains the Great Red Spot
Big enough to hold two Earths
Jupiter
      
Has 63 Satellites
Jupiter is gradually slowing down due to the tidal drag produced by its satellites
Jupiter
      
Has the Largest Satellite in the Solar System
Jupiter's moon Ganymede
Jupiter
      
Has a Moon Larger Than Mercury
Ganymede's diameter 5262 km - Mercury's diameter 4880 km.
Jupiter
      
Has a Moon Larger Than Pluto
Three actually - Ganymede (5262 km diameter), Io (3630 km diameter) and Europa (3138km diameter). Pluto's diameter = 2300 km. Ganymede is also larger than the planet Mercury. Jupiter, Earth and Neptune also have moons larger than Pluto.
Jupiter
      
Has a Moon Named Europa
Jupiter
      
Has a Moon Named Ganymede
Discovered by Galileo but named by astronomer Simon Marius after the mythological cup-bearer to the gods and Zeus' lover.
Jupiter
      
Has a Moon Named Io
Named after the priestess of the Greek goddess Hera
Jupiter
      
Is 466 Million Miles from the Sun
Jupiter has faint dust rings above its atmosphere
Jupiter
      
Is the Fifth Planet from the Sun
And also the largest planet in our solar system
Jupiter
      
Is the Largest Planet
Jupiter's mass is almost 2.5 times that of all the other planets combined
Jupiter
      
Takes 11.86 Earth Years to Orbit the Sun
Jupiter
      
Was Named After the Roman King of Gods
Jupiter was the first of three supreme deities, along with Juno and Minerva.
Mars
      
Has the Largest Volcano
Named the Olympus Mons
Mars
      
Has Two Tiny Moons: Deimos and Phobos
It is highly probable that both moons are captured asteroids
Mercury
      
Has a Relatively Large Iron Core
It comprises the majority of the planet
Mercury
      
Is Closest to the Sun
Scientists believe it possible that Mercury may have ice trapped at its north pole
Mercury
      
Takes 59 Days to Make a Rotation
The slow rotation is due to the action of tidal forces between the planet and the sun
Mercury
      
Was Named After the Roman Winged Messenger God
In Gustav Holst's "The Planet Suite"
Neptune
      
Has the Fastest Winds in the Solar System
Clocked up to 1250 m.p.h.
Neptune
      
Has a Moon Larger Than Pluto
The moon is called Triton and circles Neptune in a retrograde orbit. Triton's diameter 2700 km - Pluto's diameter of 2300 km. Jupiter, Earth and Saturn also have moons larger than Pluto.
Neptune
      
Has a Moon Named Triton
Neptune
      
Takes 165 Years to Complete an Orbit Round the Sun
Neptune has the strongest winds of any planet
Neptune
      
Was Discovered in 1846
Neptune was the first planet to be discovered by using mathematics. After the discovery of Uranus in 1781, astronomers noticed that the planet was being pulled slightly out of its normal orbit. John Couch Adams of Britain and Urbain Jean Joseph Leverrier of France, used mathematics to predict that the gravity from another planet beyond Uranus was affecting the orbit of Uranus. Johann Gottfried Galle searched for the predicted planet and observed Neptune for the first time in 1846.
Neptune
      
Was Named After the Roman Sea God
If Neptune were hollow, it would contain nearly sixty Earths
Saturn
      
Has 56 Moons
Thirty-five have been officially named.
Saturn
      
Has a Moon Larger Than Mercury
Titan's diameter 5150 km - Mercury's diameter 4880 km. Jupiter also has a moon larger than Mercury.
Saturn
      
Has a Moon Larger Than Pluto
Titan's diameter 5150 km - Pluto's diameter of 2300 km. Titan is also larger than the planet Mercury. Saturn, Earth and Neptune also have moons larger than Pluto.
Saturn
      
Has a Moon Named Tethys
Named after the wife of Okeanos, the fresh-water river that encircled the earth, in Greek mythology
Saturn
      
Has a Moon Named Titan
Saturn
      
Is 856 Million Miles from the Sun
Saturn's density is so light that it could float on water.
Saturn
      
Is Known for Its Extensive Ring System
The rings are composed of mostly ice crystals
Saturn
      
Is the Least Dense Planet
Saturn's mass is 95.1 times that of Earth but it's volume is 769 times that of Earth
Saturn
      
Was Named After the Roman God of Agriculture
The mythologies of the Greek god Cronus and that of Saturn are often mixed
Uranus
      
Has 13 Rings
William Herschell first "suspected" a ring in 1789. It was confirmed centuries later by Hawaii's Keck Telescope.
Uranus
      
Has a Moon Named Titania
Uranus
      
Orbits the Sun on Its Side
Kind of rolls around the sun
Uranus
      
Was Discovered in 1781
At the time, there were only six known planets
Uranus
      
Was Named After the Ancient Greek God of the Sky
Ouranos. The only planet, other than Earth, not named after a Roman god.
Venus
      
Has the Longest Day
243 earth days. Its day is longer than its year.
Venus
      
Is the Brightest in Our Sky
Brightest of all objects in the sky except for the sun and moon
Venus
      
Is the Hottest Planet
Though Mercury is closer, it has no atmosphere to contain the sun's heat
Venus
      
Turns on Its Axis Backward
Compared with the other planets
Venus
      
Was Named After the Roman Goddess of Love


Facts contributed by:


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