number of stars in space
Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!
Astronomers using NASA data calculate that in our galaxy alone there are at least 8.8 billion Earth-sized planets that are not too hot or not too cold and circle stars that are just like our sun, according to a study published Monday.