Milky Way galaxy, with Earth-sized planets, was reported to be 8.8 billion stars.

Astronomers at NASA's Kepler space telescope retirement calculation made ??on the basis of data, our galaxy, Earth-sized planets, at least 8.8 billion stars rotating around them is announced.
In the heat of the sun-like stars, and about 22 percent of the world similar to the size specified.
Geoff Marcy of the researchers, this life that can flourish in the billions, he said.