The area of space just above the Earth's atmosphere, where many artificial satellites orbit. In addition, the term ‘near space’ is sometimes used for the region that has received the most space probes, namely the Moon and the close planets of Mercury, Venus, and Mars.
http://www.nas.edu/ssb/elements.html Part of a National Research Council guide to space weather. Pages discuss the elements and the nature of near-Earth space. There are explanatory diagrams and photographs throughout the text and key words linked to a useful glossary.
Subjects: Astronomy and Astrophysics.