Planets of the Solar System
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97.4% consists of salt water
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
It takes light approximately 8 minutes to reach earth from the sun
Although the exoplanet, Gliese 581 C, is thought to support liquid water and to harbor life
Big enough to hold two Earths
Jupiter is gradually slowing down due to the tidal drag produced by its satellites
Ganymede's diameter 5262 km - Mercury's diameter 4880 km.
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.
Discovered by Galileo but named by astronomer Simon Marius after the mythological cup-bearer to the gods and Zeus' lover.
Named after the priestess of the Greek goddess Hera
Jupiter has faint dust rings above its atmosphere
And also the largest planet in our solar system
Jupiter's mass is almost 2.5 times that of all the other planets combined
Jupiter was the first of three supreme deities, along with Juno and Minerva.
It is highly probable that both moons are captured asteroids
It comprises the majority of the planet
Scientists believe it possible that Mercury may have ice trapped at its north pole
The slow rotation is due to the action of tidal forces between the planet and the sun
In Gustav Holst's "The Planet Suite"
Clocked up to 1250 m.p.h.
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 the strongest winds of any planet
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.
If Neptune were hollow, it would contain nearly sixty Earths
Thirty-five have been officially named.
Titan's diameter 5150 km - Mercury's diameter 4880 km. Jupiter also has a moon larger than Mercury.
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.
Named after the wife of Okeanos, the fresh-water river that encircled the earth, in Greek mythology
Saturn's density is so light that it could float on water.
The rings are composed of mostly ice crystals
Saturn's mass is 95.1 times that of Earth but it's volume is 769 times that of Earth
The mythologies of the Greek god Cronus and that of Saturn are often mixed
William Herschell first "suspected" a ring in 1789. It was confirmed centuries later by Hawaii's Keck Telescope.
Kind of rolls around the sun
At the time, there were only six known planets
Ouranos. The only planet, other than Earth, not named after a Roman god.
243 earth days. Its day is longer than its year.
Brightest of all objects in the sky except for the sun and moon
Though Mercury is closer, it has no atmosphere to contain the sun's heat
Compared with the other planets
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