Milestones in the history of communications satellites.
{| class="wikitable sticky-header"
|-
!Satellite
!First
!Launched
!Polity
|-
| Sputnik 1 || First satellite with radio transmitter || October 4, 1957 ||
|-
| Project SCORE || First communications satellite || January 1975 (occurred)||
|-
| Ekran || First serial Direct-To-Home TV communication satellite || October 26, 1976 ||
|-
| SBS-3 || First commercial use of the U.S. Space Shuttle || November 11, 1982 ||
|-
| Tracking and data relay satellite-A || First satellite of first full-time communications relay network for other spacecraft || April 4, 1983 ||
|-
| ACTS Gigabit Satellite Network || First communication satellite network to operate in the 20-30 GHz frequency band || September 12, 1993 ||
|-
| Iridium 1 || First satellite for satellite telephone service || May 5, 1997 ||
|-
| AO-40 || First satellite to use GPS for navigation and attitude determination in High Earth orbit || November 16, 2000 || <br>
|-
| Artemis || First demonstration of inter-satellite laser communication || November 21, 2001 (experiment) ||
|-
| SuitSat || First use of a decommissioned spacesuit as a radio satellite || February 3, 2006 (deployed) || <br>
|-
| BRIsat || First satellite owned and operated by a bank || October 18, 2016 (Launch)||
|-
|}
See also
- Timeline of first artificial satellites by country
- First images of Earth from space
