There are currently 3012 known exoplanets. A few are thought to be potentially habitable. One exoplanet was discovered orbiting a binary star system, so it is sometimes referred to as "Tatooine" like in Star Wars. Exoplanets have highly elliptical orbits unlike planets in our solar system. They are discovered by detecting the gravitational effects on their host stars and light blocked during transits. Initially, only large, close-in exoplanets could be detected, but water has now been confirmed on at least one exoplanet, which is exciting since water is important for life. Exoplanets form in a similar manner to planets in our solar system through accretion of dust and gas near their host stars.

1. other solar systems
and their planets

2. exoplanets
 there are currently 3012 known ones
 A couple are thought to be habitable

3. tatooine
One was discovered orbiting a binary
star so some call it tatinoe
Life from

4. Exoplanet orbits
Unlike us exoplants have highly elliptical
orbits

5. How they are
discovered
• By see the gravic effect they have on
there host stars by discoved the light
they block there host stars

6. Diffent types of
exoplanets
At first the only ones they could
discover where super close to the star +
big

7. Water
At least one exoplanet has confirmed
water this is exiting because water is
need for life

8. How they formed
 Just like normal planets the rocky ones formed
 Close to the star where metal and rock chould condense
welll
 the other one formed where it was cold enogh for ice to
form


9. bib
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<http://answers.yahoo.com/question/index?qid=20081205
084057AAPpXuv>.
 "How Planets Form How Planets Form." The Outer Planets:
How Planets Form. University of Colorado Laboratory for
Atmospheric and Space Physics, July-Aug. 2007. Web. 01
May 2012.
<http://lasp.colorado.edu/education/outerplanets/solsys_pl
anets.php>.
 "extra solar planet". Encyclopedia Britannica. Encyclopedia
Britannica Online.
Encyclopedia Britannica Inc., 2012. Web. 01 May. 2012
<http://www.britannica.com/EBchecked/topic/1076150/extr
asolar-planet>.