1. Natural satellite
(Science and technology/Satellite)

... dwarf galaxy orbiting a major galaxy, but it is normally synonymous with moon and used to identify non-artificial satellites of planets, dwarf planets, and minor planets. (There are no known natural satellites ...

2. Inmarsat 4 (I-4) Satellite
(Science and technology/Artificial Satellite)

The first of the new generation Inmarsat 4 (I-4) satellites was launched on 11 March 2005, and is now fully operational, carrying the full set of digital communications services that was previously carried ...