Exosphere is the outermost Layer of the Atmosphere that goes out about 500 - 10,000 Km in altitude.
It's the place where satellites and the space shuttle orbit the earth. Because it's difficult to define the boundary between exosphere and the outer space, exosphere may be considered as a part of outer space
The Ottoman Empire, empire created by Turkish tribes in Anatolia (Asia Minor) grew to be one of the most powerful states in the world during the 15th and 16th centuries
