Air space is a term used to describe the area of the atmosphere that is above the Earth's surface. It is divided into two parts: the lower airspace, which is the area from the surface up to 18, 000 feet, and the upper airspace, which is the area from 18, 000 feet to 60, 000 feet. The term 'air space' is also used to refer to the airspace around airports and other areas where aircraft fly. The crossword solutions for the term 'air space' are 'LUNGS' (5 letters) and 'tvmaket' (8 letters). LUNGS are organs in the human body that are responsible for taking in oxygen and expelling carbon dioxide. TVmarket is an online marketplace for television shows and movies.