over 75,scientist say so far they've found 500 and still counting!
Now we know of 861 exoplanets, with several thousand awaiting confirmation
This question is being awnswered in 2014 so it is as of 2014.1,653 dumbhead.
Nobody knows. There is no estimation of how many stars there are and how many stars have planets. In our Solar System, since Pluto got downgraded to a 'dwarf planet' there are eight. Pluto was always weird -- an eccentric orbit at a weird tilt, way off from the others. So it mostly makes sense to say eight. A lot of people got upset, but we haven't heard a word from Pluto. In recent years, many planets were discovered orbiting other stars, they are known as exoplanets. There are about 350 known exoplanets, and the number is growing all the time.
The Hubble and Keppler space telescopes are detecting exoplanets
There are no exoplanets in our solar system. By definition, an exoplanet is a planet that is not in our solar system.
Now we know of 861 exoplanets, with several thousand awaiting confirmation
about 403.
The "exoplanets" known as "Hot Jupiters".
See related link for a full list of the all "known" exoplanets
This question is being awnswered in 2014 so it is as of 2014.1,653 dumbhead.
Nobody knows. There is no estimation of how many stars there are and how many stars have planets. In our Solar System, since Pluto got downgraded to a 'dwarf planet' there are eight. Pluto was always weird -- an eccentric orbit at a weird tilt, way off from the others. So it mostly makes sense to say eight. A lot of people got upset, but we haven't heard a word from Pluto. In recent years, many planets were discovered orbiting other stars, they are known as exoplanets. There are about 350 known exoplanets, and the number is growing all the time.
The Hubble and Keppler space telescopes are detecting exoplanets
There are no exoplanets in our solar system. By definition, an exoplanet is a planet that is not in our solar system.
Not that we know of.
Yes, scientists have discovered many new planets outside the solar system, known as exoplanets. Statistical models indicate there are hundreds of billions of such planets within the Milky Way.
exoplanets
"The 3" is just plain wrong; much more than 3 exoplanets have been found so far.