In 1990 , scientists found a glimmer of hope with a number of planets discovered outside the solar system ( exoplanets ) . The planets are very diverse . Starting from the fire planet , giant planets , rocky planets , planets that do not have a star , and many more . Until now , the discovery of exoplanets reached 230 planets . Here is a list of ten exoplanets :1 . The Fire Horse
Planet 51 Pegasi b was the first exoplanet discovered planet hunters in 1990 . Jupiter -like planet , but the hot temperature given the nickname Bellerphon , mythical Greek hero who tamed the winged horse Pegasus . Giving this name is based on the constellation Pegasus , the location of the planet .
2 . Nearest Neighbor Earth

3 . Planets Without Stars

There are a number of exoplanets that have a star or the sun is more than one , even to have three suns . As with Planemos . The planet is just " floating " around the star away without anything.
4 . the Swift

Planet SWEEPS - 10 is only 740,000 miles from its star . I was so close , a planet called ultra - short - period planets ( USPPs ) it only takes less than one day to orbit . One year there equal to ten hours on earth .
5 . World Fire and Ice

The planet is " locked " to its star , just like the moon has always been a satellite of the earth . So , one side of the planet always faces the Upsilon Andromeda b there . This position creates the highest temperature so far known to astronomers . One side of the planet is very hot like lava , while the other side very cold temperatures .
6 . giant ring
Planets orbiting the star Tau 4 Coku this is the youngest exoplanet aged less than one million years . Astronomers detect the presence of the planet of the large hole of the planet's rings . The hole size ten times larger than the earth .
7 . The old fart

The oldest planet is also called the primeval world was about 12.7 billion years . Scientists suspect that the planet formed eight billion years ago before Earth materialize and just two billion years of the Big Bang events . This finding raises the discourse that life may occur earlier than expected so far .
8 . Shrinking Planet

Similar to the SWEEPS - 10 , planet HD209458b orbits very close to its star that the planet's atmosphere swept away by stellar winds . Some scientists estimate the planet is losing ten thousand tons of material every second . In the end , maybe it's just the core of the planet will be left .
9 . The atmosphere Thickness

The planet HD 189733b is the first planet whose atmosphere " smell " by scientists . By analyzing light from the planet's star system , astronomers said the atmosphere of the planet covered by a thick fog sort of similar to a grain of sand . Unfortunately , the water was not detected on the planet . However , planet hunters suspect there is life beyond the thick fog .
10 . Earth 's twin ?

Exoplanet Gliese 581 C is currently attracting the attention of scientists around the world . Because the smallest planets outside the solar system is in the " safe zone " . That is , the planet is located not too far nor too close to its star , just like the position of our earth to the sun . This discovery raises the probability of the presence of water or even life there . The planet is 50 percent larger and five times more massive than Earth .Could there be other life out there ? Scientists say more can uncover it in 2013 , when the construction of high -tech telescope called the James Webb Space Telescope ( JWST ) .
Thus 10 Most Unique Planet
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