Researchers say a few hundred thousand billion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way.
It may be possible that one in 4 stars similar to the Sun could be orbited by Earth-size planets.
The researchers found larger numbers of smaller planets than of larger planets.
Day in Pics: 27th November
Showbiz World - November 27, 2014
Poonam Pandey: The internet sensation