Thanks to the Kepler telescope, scientists now estimate that there are 50 billion planets and 500 million life-capable planets in the Milky Way galaxy. This disclosure was made by the researchers at the annual meeting of the American Association, for the Advancement of Science. More interesting, 500 million of them may be in zones where life could exist. These numbers come, of course, from NASA’s Kepler telescope, which was launched specifically for scientists to search for other planets.The estimates come from counting how many planets have passed through Kepler’s view so far and extrapolating that number to the full size of the galaxy. So far, Kepler has found 1,235 objects that appear to be planets out of which 68 planets were found to be similar to the size of the Earth. These 68 planets are assumed to revolve around more than 156,000 stars. However, the main focus would be on those planets which are capable of harboring life. These planets are assumed to be most probably situated in a zone called 'Goldilocks' zone–a region that is neither too hot nor too cold. The Kepler space telescope which was launched in 2009 is magnificently modified to identify the Earth-sized planets, revolving around distant stars. A total of 590- million-dollars will be spent in this telescope program, which will take around three and a half years to complete the explorations.