21.   The alternating light and dark bands, photographed at great distance from orbiting satellites, are believed to contain different mixtures of dust and ice.

22.   The flywheel systems could be used as an alternative to chemical batteries that currently store and provide power aboard orbiting satellites.

23.   The primary attraction for NASA was their utility in the retrieval of orbiting satellites for repairs or return to Earth.

24.   The Pentagon insists the loss of the encoded chip, which tells an orbiting satellite which way to point, would have minimal impact on national security.

25.   The robot carries a pair of Global Positioning System receivers and uses signals from orbiting satellites to pinpoint its location.

26.   The signal is fed to uplink towers aimed at orbiting satellites.

27.   The service bounces broadcast signals off orbiting satellites and into homes equipped with a small, dish-shaped antenna and digital decoder.

28.   The systems rely on a constellation of rapidly orbiting satellites, so that handsets in any location, even briefly in office canyons, can make calls.

29.   These include damage to orbiting satellites and periodic disruptions of broadcast communications and power grids that distribute electrical power.

30.   Using data compression and encryption technology developed by Hughes, the movie film is converted into a digital format and transmitted to an orbiting satellite.