The first ever census of cosmic planets has estimated about 50 billion planets in our milky way.

500 million of 50 billion planets are in Goldilocks zone where it is expected that life may exist. Temperature at Goldilocks zone is moderate and life may exist there.

The counting was carried for 3 and half years. And the mission was the result of NASA’s Kepler telescope. Chief of Kepler William Borucki said that whole of the search was based on heat and trial method. The first phase of counting was carried and later numbers of star was estimated accordingly. Kepler spotted planet in Earth and star orbits.

The mission revealed that approx 10.5% of stars have planets resembling Earth whereas 20.8% have Neptune sized planet and 5.2% have planets revolving like Jupiter. The team of William Borucki found that one of two stars has planets. However this cannot be precise counting as Kepler has to find a lot more and accurate to give detailed analysis. The present data is based on frequencies of stars in a calculation carried for more than 3 years.

The calculation is not new, as scientist have been regular with the data some said the number to be 100 billion, however in 2010 a scientist from Yale said that the number can be about 300 billion stars. However the recent calculation say it 50 billion.